Entries - Entry Category: Science and Technology

Duke, Charles Sumner

A trailblazing African-American architect and engineer, Charles Sumner Duke not only designed unique public structures, but he also fought for housing rights and educational opportunities for African Americans. His powerful legacy continues in the buildings he designed, as well as in the organization he formed to facilitate the development of engineering and technological skills in youth of color. Charles Sumner Duke was born in Selma, Alabama, on July 21, 1879. His father, Jesse Duke, was the editorial writer and publisher for a local newspaper, The Herald. His mother, Willie Black Duke, was from a family of established businessmen. It was a financially secure family, allowing Duke and his siblings to take advantage of opportunities that many others in the black …

Earwigs

Earwigs belong to the Phylum Arthropoda, Class Insecta, and Order Dermaptera. It is one of the comparatively species‐poor insect orders, as there are about 2,200 extant species within eleven families. About twenty-five species occur in North America, sixty in Australia, and forty-five in Europe. Earwigs are found on all continents except Antarctica and occur in northern latitudes as far north as Greenland. Earwigs exhibit their major diversity in the tropics and have a strong preference for warm and moist environments; few survive winter outdoors in cold climates. The overwhelming majority of earwig species are in the suborder Forficulina, grouped into nine families of 180 genera, including the common European earwig, Forficula auricularia. As of 2020, no earwigs have been reported …

Elk

Among the many success stories involving wildlife in Arkansas, a high-profile example is the elk of the Buffalo National River country. Wiped out in pioneer and early settlement days, the elk were brought back beginning in 1981, and, since then, the big animals have become well enough established that they can be hunted on a limited basis. The elk have also become a reliable tourist attraction in Newton County and the surrounding area. Elk were native to Arkansas but were wiped out by changing habitat, mostly the clearing of land. The variety in the area in the early days was the eastern subspecies of elk, which is extinct. By the time Arkansas became a state in 1836, elk were dwindling, …

Endemic Biota

An endemic species is any organism that is indigenous to a restricted or defined geographical area. Arkansas has a diverse variety of endemic biota, including fungi, plants, and animals. By 2017, there were about 139 endemic species in the state, most found in the Interior Highlands (Ouachita and Ozark Mountains). A combination of biological, climatic, and/or physical factors contribute to endemism. Some species are found in specific geographical or physiographic regions of the state, such as the Gulf Coastal Plain or Interior Highlands, whereas others may be restricted to specific sites in river drainages. Around the world, endemic species can also be found in geographically and biologically isolated areas such as islands and remote island groups, such as the Galápagos …

Endemic Darters

Forty species/subspecies of darters live in Arkansas; many of them are beautifully colored, especially males during the breeding season. Of these forty, five species are endemic to Arkansas, meaning that they occur nowhere else on the planet. Those five endemic darters are the beaded darter (Etheostoma clinton), strawberry darter (Etheostoma fragi), yellowcheek darter (Etheostoma moorei), paleback darter (Etheostoma pallididorsum), and the most recently described Ouachita darter (Percina brucethompsoni). The beaded darter, Etheostoma clinton (named after Bill Clinton, the forty-second president of the United States) was described (elevated) by Richard Mayden of St. Louis University in Missouri and Steven Layman of Kennesaw, Georgia, from specimens collected in the upper Ouachita and Caddo rivers. It was formerly known as the speckled darter …

Endemic Isopods

Isopods belong to the Phylum Arthropoda, Subphylum Crustacea, Class Malacostraca, and Order Isopoda, and include pillbugs, sowbugs, woodlice, and their relatives. Isopods are cosmopolitan organisms that inhabit saltwater and freshwater habitats, including subterranean waters, but they can also be found in terrestrial environments. There are over 10,000 species of isopods worldwide in eleven suborders with about 4,500 species found in marine environments, 500 species in freshwater environments, and 5,000 species on land. Their fossil record dates back to the Carboniferous Period of the Paleozoic (some 300 million years ago) when they lived in shallow seas. Isopods range in length from thirty micrometers (microcerberid isopods) to 500 mm (19.7 in.) for the giant Antarctic isopod (Bathynomus giganteus). The majority of North …

Endemic Madtoms

aka: Ouachita Madtoms
aka: Caddo Madtoms

Two miniature catfishes are endemic to Arkansas—that is, they occur only in Arkansas and nowhere else on Earth. Both of these endemic fishes, the Ouachita madtom (Noturus lachneri) and the Caddo madtom (Noturus taylori), are taxonomically placed in the genus Noturus, the madtoms, which are contained within the catfish family Ictaluridae. Noturus lachneri was originally described by William Ralph Taylor in 1969 from the type locality of the Middle Fork of Saline River at State Highway 7, 11.2 miles (18.1 kilometers) north of Mountain Valley in Garland County. It was believed to be confined to the upper Saline River drainage until a Northeastern Louisiana University graduate student discovered it in a small tributary of the main Ouachita River just below …

Esocids

aka: Pikes

Esocids belong to the order Esociformes and family Esocidae. They were endemic to the Northern Hemisphere of North America and Eurasia during the Paleogene (66 to 23 million years before present). The only living genus is Esox (pikes and pickerels) and it includes seven species; four of those species occur in North America, and five (one introduction) of the seven can be found in Europe and Asia. In the United States, the natural range of esocids is restricted to regions east of the Rockies; however, many introductions have been made in the west. In Arkansas, there are four species: the grass pickerel (Esox americanus), northern pike (E. lucius), muskellunge (E. masquinongy), and chain pickerel (E. niger). Two of these, E. …

Evans, David L.

David L. Evans worked as an engineer on the Saturn rockets and Apollo moon landing missions but became best known later for his recruitment efforts on behalf of Harvard University, where his work led to greater diversity in the student body. He was inducted into the Arkansas Black Hall of Fame in 2005. David L. Evans was born in 1939 in Wabash (Phillips County), near Helena (Phillips County), to sharecropper parents; he was the fourth of seven children. His father died when he was ten years old. Family members encouraged his mother, pregnant with her seventh child, to move to Chicago, Illinois, or Cleveland, Ohio. Instead, his mother left tenant farming and became a maid. When Evans was sixteen, his …

Exotic Fish

An exotic (or invasive) species is any plant or animal that is not native to an ecosystem and that can potentially cause economic or environmental harm, as well as damage to native animal or human health. Several species of exotic fishes in Arkansas have the capability to cause significant economic losses to fisheries and reduce opportunities for effective uses of valued aquatic natural resources. These include seven species within the minnow family Cyprinidae (now considered Leuciscidae), five species in the trout and salmon family Salmonidae, a single species of cichlid (Cichlidae), snakehead (Channidae), smelt (Osmeridae), and yellow perch (Percidae), and two species of pikes (Esocidae). CYPRINIFORMES: CYPRINIDAE (LEUCISCIDAE) Rudd or pearl roach (Scardinius erythrophthalmus). This fish apparently entered the United …

Extinct Animals [Historic Period]

Arkansas has undergone many changes over geologic time. The climate has ranged from tropical, supporting dinosaurs in the Mesozoic period, to the cold period at the end of the Cenozoic period, known as the Pleistocene epoch. The most recent drastic climate change began about 1.6 million years ago during the Pleistocene epoch, the planet’s most recent ice age. Glaciers covered much of North America. They did not reach Arkansas but occurred as far south as the Missouri River. During warm periods, the glaciers melted and sent millions of gallons of water through Arkansas on its way to the sea. Many types of animals that lived here have disappeared. If they had a hard shell or a bony skeleton, fossil records …

Extinct Animals [Prehistoric Period]

Fossils and sedimentary rock layers contribute to current knowledge of the animals that lived in Arkansas in the geologic past. A careful examination of these layers and the types of fossils contained in them reveals clues about the age of the rock and the different environments of the past. In the older deposits, evidence indicates that all of Arkansas was covered by the ocean at various times; fossils of marine animals are found as well as sequences of rock that display patterns only found in marine sedimentary deposits. In some of the most recent deposits, the remains of land animals that walked the earth just a few thousand years ago have been found. All but the most recent of the …

Fairy Shrimps

aka: Anostraca

The Order Anostraca (Phylum Arthropoda, Subphylum Crustacea, Class Branchiopoda) includes the fairy or brine shrimps. Worldwide, there are 300 species within twenty-six genera placed in eight families: Artemiidae (one genus, nine species), Branchinectidae (one genus, forty-five species), Branchipodidae (five genera, thirty-five species), Chirocephalidae (nine genera, eighty-one species), Parartemiidae (one genus, thirteen species), Streptocephalidae (one genus, fifty-six species), Tanymastigidae (two genera, eight species), and Thamnocephalidae (six genera, sixty-two species). In Arkansas, seven anostracan species are known: Eubranchipus neglectus, E. serratus, E. moorei, Branchinecta packardi, Thamnocephalus platyurus, Streptocepalus sealii, and S. texanus. Fairy shrimps are very primitive organisms believed to have diverged during the Ordovician period from the main line of the Branchiopoda. Their fossil record dates back to the Devonian, although …

Famous and Historic Tree Program

The purpose of the Arkansas Famous and Historic Tree Program (AFHTP) is to create a greater awareness and appreciation of the state’s trees through the recognition of their historical background. The AFHTP used four criteria to determine the historic status of a tree or tree community. These criteria were modeled after the National Register of Historic Places criteria and include a tree’s association with significant events, people, and landmarks. Significant horticultural, ecological, or structural characteristics, or ability to yield cultural information in local, state, or national history are also assessed. The AFHTP formally originated in 1995 within Arkansas State Parks, though its establishment had been the ambition of several state agencies since the 1970s. The creation of the program led …

Ferns

Ferns are among the most ancient plant forms, distinguished by having a defined vascular system, reproducing by spores, and often having deeply divided leaves that unfurl from a coiled fiddlehead (crozier). They originally appeared in the fossil record about 360 million years ago, but most modern ferns arose in the early Cretaceous period about 145 million years ago. Discussed here are “true” ferns as understood in the horticultural sense and not in the broader classification used by botanists that include horsetails (Equisetum, of which Arkansas has four species), whisk ferns (Psilotum, one species), and sometimes Selaginella (ten species). Using botanist James H. Peck’s inclusive 2011 list, Arkansas has about eighty species of true ferns that are native to the state, …

Fess, Don

Don Fess of Magnolia (Columbia County) built and patented a prototype engine that saved energy by using rotating pistons rather than the standard up-and-down pistons. Don Fess was born in Allendale, Illinois, on February 12, 1915. His parents, Ora and Eunice Fess, moved with their four sons to Haynesville, Louisiana, in about 1925. Fess finished high school there at age sixteen (at that time, Louisiana schools had only eleven grades) and began to look for a job. He married Martha Emma Wainwright on June 1, 1934, and built a house across the street from his parents using salvaged lumber. He delivered ice seven days a week for a wage of $1.50 per day. He and his wife had six children. …

Fish

Arkansas fishes are a combination of abundant and rare species—primitive and ancestral, commercial and sport, game and non-game, native and introduced, and transplanted and exotic. There are approximately 233 fish species in Arkansas. Arkansas has a relatively rich fish fauna compared to neighboring states (which range between 148 and 319 fish species). Some species, such as the western mosquitofish (Gambusia affinis), are common statewide, whereas other species, such as the yellowcheek darter (Etheostoma moorei), have more restricted distributions. Distinct differences in topography and geology between northwestern (upland) and southeastern (lowland) Arkansas have led to distinctly different groups of fish species developing in each of these regions. For example, because of an abundance of clear, gravel-bottom, flowing streams in northwestern Arkansas, …

Fleas

Fleas are small, wingless, hematophagous (blood-feeding) ectoparasites that belong to the Phylum Arthropoda, Class Insecta, and Order Siphonaptera. There are four recognized suborders—Ceratophyllomorpha, Hystrichopsyllomorpha, Pulicomorpha, and Pygiopsyllomorpha—with about 246 recognized genera and over 2,500 described species within sixteen families. Adult fleas feed on blood of mostly mammals (about ninety-four percent of known species), including dogs, cats, and humans, with the remainder of species parasitizing birds. Fleas are an important component of the worldwide biota. In addition, they can be nuisance biters, and some serve as vectors or intermediate hosts of flea-borne disease agents and parasites. The most recent summary listed twenty-nine species of fleas in Arkansas. Fleas are most closely related, evolutionarily speaking, to insects in the orders Diptera (true …

Forest Fire Lookouts

aka: Fire Towers

Fire towers (also known as lookouts) go back thousands of years. The oldest lookout still standing is the Tuztoromy Firewatch Tower in Sopron, Hungary, which was built in the thirteenth century and remodeled in 1681. The first one built in America was in downtown Harlem, New York, constructed in 1856 in what is now Marcus Garvey City Park. The first fire lookout strictly for protection of American forests was built in 1902 at Bertha Hill near Headquarters, Idaho. At the height of their use (1930s to 1970s), Arkansas had more than 120 fire towers; by 1994, forty-eight were still standing, and by 2023, there were forty-six. Arkansas has fourteen lookouts on the National Historic Lookout Register and three on the …

Fort Smith Tornado of 1898

On January 11, 1898, a tornado tore through Fort Smith (Sebastian County) and killed more than fifty people; it is one of the deadliest tornadoes in Arkansas history. At around 11:00 p.m. on January 11, 1898, a tornado formed in Oklahoma west of Fort Smith and headed toward the city. After crossing the Poteau River, it slammed into the Fort Smith National Cemetery, where it was reported that “huge trees are uprooted, the lodge demolished and the wall torn down.” Marble-sized hail pummeled buildings in the town, including hotels and boarding houses that were packed with travelers because the federal court was in session. The tornado hit Fort Smith’s business district hard, smashing buildings and tearing off roofs before continuing …

Fossils

Fossils are the remains of animals and plants that have been preserved in the earth’s crust. They can consist of the remains of invertebrates (animals without a backbone) or vertebrates (animals with a backbone). The majority of fossils in the fossil record, and from Arkansas, are invertebrate remains. Fossils are found mostly in sedimentary rocks, as compared to igneous and metamorphic rocks, and can form in a variety of ways. Animals living in the water column in the ocean die, and their shells or hard parts sink to the bottom of the seafloor and become preserved in sediments that later may lithify, or change to rock. Other animals crawl on the seafloor through sand and silt or burrow into the …

Fourche Mountain Salamander

aka: Plethodon fourchensis

The Fourche Mountain salamander (Plethodon fourchensis) is a slender, large (115–178 millimeters in total length) terrestrial salamander that is one of twenty or so members of the caudate family Plethodontidae that can be found in Arkansas. This species is one of three endemic salamanders known to exist in Arkansas and is confined to Fourche Mountain and Irons Fork Mountain in the south-central region of the Ouachita Mountains. Normally, these salamanders can be found beneath the surface rock of hillsides and valleys within these mountains; however, they can also be found under rotting logs on the forest floor. Adults of this species possess two longitudinal rows of large, white blotches on the back; the dorsal body color is, otherwise, uniformly black. …

Freshwater Drum

aka: Grunter
aka: Gaspergou

The freshwater drum (Aplodinotus grunniens) belongs to the order Perciformes and family Sciaenidae; it is the only freshwater member of the family. Freshwater drum are endemic to freshwater environs of the Americas, and their distributional range extends as far north as the Hudson Bay of Canada and reaches as far south as the Usumacinta River Basin of Guatemala. In the United States, eastward distribution includes the eastern Appalachians westward as far as Kansas, Oklahoma, and Texas. This fish appears to have the greatest latitudinal range of any freshwater fish in North America. In Arkansas, A. grunniens occurs throughout the state but mainly is found in the larger lakes and rivers. The closest living relatives of A. grunniens are a group …

Fungi

Arkansas is home to a diverse and remarkable group of fungi, which are separated by mycologists (biologists who specialize in the study of fungi, or mycology) into species representing the true fungi belonging to the kingdom Fungi (e.g., chytrids, pin molds, sugar molds, club fungi, yeasts, sac fungi, and mushrooms) and a hodgepodge of other fungus-like protists (e.g., slime molds, water molds, downy mildews). Members of the kingdom Fungi are descended from a common ancestor, while fungus-like protists, though not necessarily closely related to each other or to the true fungi, are similar to true fungi in appearance and action. Characteristics of Fungi Although the number of fungal species in Arkansas is not known, fungi are quite diverse worldwide. According …

Gars

aka: Garfish
aka: Garpikes

Gars are a primitive group of euryhaline fishes dating back to the late Jurassic to early Cretaceous Period, about 150 million years ago. Gars are one of the most recognizable fishes because of their slender torpedo-shaped bodies, ganoid scales, and long snouts with numerous teeth. Dorsal and anal fins are set far back on the body, and the caudal fin is rounded, with a condition known as abbreviate-heterocercal. Gars are unusual among fishes in that their vascularized swim bladders can function as lungs; they must surface periodically to take a gulp of air. Arkansas hosts four gar species: the alligator gar (Atractosteus spatula), spotted gar (Lepisosteus oculatus), longnose gar (L. osseus), and shortnose gar (L. platostomous). Fossilized gar specimens have …

Garver, Neal Bryant

Neal Bryant Garver arrived in Little Rock (Pulaski County) in 1918 to help provide engineering services for the construction of a munitions plant during World War I. As the Arkansas State Highway Department’s first bridge engineer, Garver also led the design of more than 2,000 bridges from 1921 to 1950, helping to modernize the state’s roadways by adding river crossings. In 1919, Garver started what became the state’s largest engineering firm, which began by providing structural engineering services for Little Rock High School (later called Little Rock Central High), North Little Rock High School, the Pulaski County Jail, and many other structures. Neal Garver was born on February 17, 1877, in Lee County, Iowa, near the Mississippi River, to the …

Gastrotrichs

aka: Hairybacks

The Phylum Gastrotricha (commonly called “hairybacks”) comprises about 800 species of marine, brackish, and freshwater microscopic invertebrates. Twelve genera and fewer than 100 species of freshwater gastrotrichs are known from North America. However, in North America, perhaps 75 to 90 percent of the probable diversity of freshwater gastrotrichs species are undescribed. Gastrotrichs are widely distributed cosmopolitan organisms that are divided into two orders: the Macrodasyida (with nine families), which, except for two freshwater species (Marinellina flagellata and Redudasys fornerise), are marine, and the Chaetonotida (seven families), some of which are marine, estuarine, and semi-terrestrial forms, while others are primarily found in freshwater. The Chaetonotida can be further broken down into two suborders: the Multitubulatina (Nesodasys) and the Paucitublatina (Chaetonotus, Dasydytes, …

Geckos

Geckos are lizards that belong to the Class Reptilia, Order Squamata, Suborder Sauria (Lacertilia), and Infraorder Gekkota within seven families, including Carphodactylidae (seven genera, thirty species), Diplodactylidae (twenty-five genera, 137 species), Eublepharidae (six genera, thirty species), Gekkonidae (fifty-four genera, 1,264 species), Pygopodidae (eight genera, thirty-five species), Phyllodactylidae (nine genera, 100 species), and Sphaerodactylidae (twelve genera, 200 species). By far, the true geckos (Gekkonidae) are the largest family of lizards. Many common geckos are members of this family, including dtellas (Gehyra), house geckos (Hemidactylus), true geckos (Gekko), and day geckos (Phelsuma). Geckos are cosmopolitan in distribution and are particularly species-rich in the tropics. At least one type of gecko is found in Arkansas. Geckos probably evolved in the Lower Cretaceous, and …

Gerig, William Lee

William Lee Gerig was a civil engineer working on railroads and dams in both the United States and abroad, including his service as chief engineer for the construction of the Panama Canal. By the end of his career, he had consulted on every dam built in the United States from 1923 to 1938. William Gerig was born on March 25, 1866, in Boone County, Missouri, the son of Swiss immigrants Francis Joseph and Carolyn Degan Gerig. William Gerig’s grandfather Degen came to America in the early eighteenth century to practice civil engineering. His father, Francis Joseph, assisted in the construction of the Suez Canal before settling in Missouri. As a young boy, the instruments that surveyors used fascinated Gerig, and …

Goldeyes and Mooneyes

aka: Mooneyes and Goldeyes
aka: Hiodontid Fishes

North American freshwater fishes of the family Hiodontidae (order Hiodontiformes or Osteoglossiformes) include the goldeye (Hiodon alosoides) and mooneye (H. tergisus). The goldeye ranges from James Bay (bordering the provinces of Ontario and Quebec) in Canada and the Mississippi River basins from the Northwest Territory to western Pennsylvania and Ohio south to Louisiana. In Arkansas, H. alosoides is found sporadically in lakes and the larger turbid rivers of the state, including the Arkansas and Mississippi, and the smaller Black River. The mooneye (also called the “freshwater tarpon”) ranges from the St. Lawrence–Great Lakes, Mississippi River, and Hudson Bay basins from Quebec and Alberta, Canada, east to western North Carolina and south to Louisiana. In Arkansas, H. tergisus occurs in large …

Good, Mary Lowe

Mary Lowe Good was a renowned chemist, industrial innovator, professor, and government leader. Good was the first woman in Arkansas to earn a PhD in the so-called hard sciences such as chemistry or physics (fellow Arkansan Margaret Pittman was awarded a PhD in bacteriology in 1929). Good was the first woman elected to the board of the American Chemical Society, and she held important U.S. government positions under the administrations of four presidents. Mary Lowe was born in Grapevine, Texas, on June 20, 1931. Her parents were Winnie Lowe, who was a teacher and librarian, and John Lowe, a school principal; she had three siblings, including Betty Ann Lowe, who became a renowned hospital administrator. In 1942, the family moved …

Greers Ferry Dam and Lake

Greers Ferry Dam on the Little Red River, approximately three miles north of Heber Springs (Cleburne County), is a concrete dam built between 1959 and 1962. The dam’s primary function is flood control, but it also serves as a hydroelectric power plant. Greers Ferry Lake, created as a result of the dam, is a popular recreational destination. The flow of the Little Red River was uncontrolled during the first half of the twentieth century, resulting in almost yearly flooding downstream; high water levels in the Little Red River could compound flooding problems further downstream along the White River. In 1938, Congress passed the Flood Control Act, which authorized the U.S. Army Corps of Engineers to build dams on most of …

Grotto Salamander

aka: Eurycea spelaea
aka: Ghost Lizard
aka: Ozark Blind Salamander

The grotto salamander (Eurycea spelaea) is a species of lungless salamander in the Phylum Chordata, Subphylum Vertebrata, Class Amphibia, Order Caudata, and Family Plethodontidae. It was originally described as Typhlotriton spelaeus but is now considered a member of the genus Eurycea. It is endemic to wet caves, sinkholes, and karst regions beneath the Springfield and Salem Plateaus of the Ozark Mountains of 120 individual sites in northern Arkansas, 124 sites in southwestern Missouri, forty-three sites in northeastern Oklahoma, and one county (Cherokee) in extreme southeastern Kansas. Its natural habitats are freshwater springs, inland karsts, and caves. It is not listed by the federal government as endangered or threatened, but it is vulnerable to changes in groundwater quality and a reduction …

Haemogregarines

Haemogregarines are protist parasites that belong to the Phylum Apicomplexa, Class Conoidasida, Order Eucoccidiorina, and Suborder Adeleorina, and include the following seven families: Adeleidae, Dactylosomatidae, Haemogregarinidae, Hepatozoidae, Karyolysidae, Klossiellidae, and Legerellidae. There are two major genera, Haemogregarina and Hepatozoon, in addition to several minor ones, including Babesiosoma, Bartazoon, Cyrilia, Dactylosoma, Desseria, Hemolivia, and Karyolysus. As a group, these parasites are cosmopolitan in their range of infected hosts (such as turtles, crocodiles, birds, reptiles, and mammals) and geographic distribution. In general, haemogregarines sensu lato (meaning, in a broad sense) are elongate to fusiform ovoidal organisms that occur within the erythrocytes (red blood cells) of various animals, mostly poikilothermic vertebrates (animals whose internal temperatures vary widely). They form a group of diverse …

Handywagon

The Handywagon, built in 1964 for the Arkansas Louisiana Gas Company (Arkla), was intended as an economical vehicle for use by the company’s Gaslite and domestic appliance servicers, meter readers, collectors, and meter setters. The small wagon was designed to be easily reparable and average thirty-five miles per gallon. In mid-1963, Arkla board chairman Wilton “Witt” R. Stephens asked company lawyer Raymond Thornton to design a utility vehicle that could operate economically, have a 900-pound load capacity, weigh less than a ton and a half, and be company-built. In 1964, Thornton chose Ed Handy, a company construction engineer, to collaborate with him on the project. After much research, the two men found the power train they needed in Holland. Van …

Harding, Arthur McCracken

Arthur McCracken Harding, the first Arkansas-born president of the University of Arkansas (UA) in Fayetteville (Washington County), served his alma mater as a professor and in various administrative positions from 1905 to 1941, and then as president from 1941 to 1947. His teaching was marked by publication of books on mathematics and astronomy, and his administrative service developed new programs and extension of university education throughout Arkansas. As university president, he worked to quell political turmoil and helped UA face changes to the university brought by World War II. Arthur McCracken Harding was born on September 3, 1884, in Pine Bluff (Jefferson County), the eldest of seven sons, to Charles Taylor Harding and Florence May Brewster Harding. (His great-grandfather was …

Harris, Ernest James

Ernest James Harris was an accomplished entomologist known for his work on breeding Biosteres arisanus, a species of wasp that parasitizes fruit fly eggs. Thanks to the work done by Harris, B. arisanus has been bred on a large scale for the purposes of pest eradication. More than twenty nations have adopted use of the “Harris strain” of the wasp for fruit fly eradication. Harris was inducted into the Arkansas Black Hall of Fame in 1999. Ernest J. Harris was born on May 24, 1928. His parents had a farm in North Little Rock (Pulaski County), where Harris’s interest in insects first developed. After graduation, he attended Arkansas AM&N (now the University of Arkansas at Pine Bluff). There, he majored …

Harry K. Dupree Stuttgart National Aquaculture Research Center

The U.S. Department of Agriculture Agricultural Research Service (USDA-ARS) actively supports aquaculture through research conducted at the Harry K. Dupree Stuttgart National Aquaculture Research Center (HKDSNARC) in Stuttgart (Arkansas County). The mission of the HKDSNARC is to conduct cutting-edge research that addresses the highest priorities of the U.S. aquaculture industry, as well as serving as a global leader in aquaculture research. The research conducted addresses vital issues that are national in scope and result in new knowledge that informs scientists, farmers, feed mills, pharmaceutical companies, processors, teachers, governmental agencies, and consumers. The HKDSNARC collaborates with universities, international research institutions, government agencies, and private industry. Since the 1970s, aquaculture has been the fastest-growing sector of global food production. Global aquaculture production in …

Harvestmen

aka: Daddy Long-Legs
aka: Granddaddy Long-Legs

Harvestmen belong to the Phylum Arthropoda, Subphylum Chelicerata, Class Arachnida, and Order Opiliones. They represent the third most diverse order in Arachnida. The order Opiliones includes five suborders as follows: Cyphophthalmi, Eupnoi, Dyspnoi, Laniatores, and Tetrophthalmi. They are often referred to as “daddy long-legs.” They are found throughout the world (except Antarctica), and there are over 6,650 species. Their common name is derived from the fact that they are common during the harvesting season. They are traditionally akin with the Order Acari (ticks and mites) or the Novogenuata (the Scorpiones, Pseudoscorpiones, and Solifugae); however, others suggest the Opiliones forms a clade with the scorpions and two smaller orders. As such, they are considered the sister group of scorpions. In addition, …

Hemipterans

aka: True Bugs

Hemipterans, or true bugs, belong to the Phylum Arthropoda, Superclass Hexapoda, Class Insecta, Order Hemiptera, and four suborders: Auchenorrhyncha, Coleorrhyncha, Sternorrhyncha, and Heteroptera. Hemiptera is the largest order of hemimetabolous insects (those not undergoing complete metamorphosis), although male scale insects (Coccoidea) do undergo a form of complete metamorphosis. The number of species in the order is about 75,000, with a great diversity of forms, including aphids, cicadas, leafhoppers, planthoppers, and shield bugs. The three largest families of Heteroptera are Miridae (plant bugs), Lygaeidae (seed bugs), and Pentatomidae (stink bugs). The largest family, Miridae, contains major insect pests and predatory groups that can be used as biological control agents. Although hemipterans inhabit a wide variety of habitats, most are generally terrestrial, …

Herrings

aka: Clupeids

Herrings (Order Clupeiformes) belong to a large family (Clupeidae) of about 200 species within fifty-four genera of cosmopolitan ray-finned fishes that are mostly marine; a few inhabit freshwater, and some are anadromous—that is, they migrate up rivers from saltwater habitats for purposes of spawning. The family includes herrings, menhadens, sardines, and shads. Most herrings are small fishes, generally being less than 300 mm (12 in.), but some may reach 750 mm (30 in.). Many are valuable food fishes and are collected for production of fish meal and oil, protein concentrate, and fertilizer. Some commercially important species include Atlantic herring (Clupea harengus) found in the north Atlantic, Pacific sardine (Sardinops sagax), and Atlantic menhaden (Brevortia tyrannus). In the fossil record, clupeid …

Hoover, Dorothy M.

aka: Dorothy Estheryne McFadden Clarke Hoover

Dorothy M. Hoover was a pioneer in the field of aeronautical mathematics and physics. The granddaughter of enslaved people, she overcame the significant obstacles facing African American women in the Jim Crow era of the twentieth century to earn advanced degrees in mathematics and physics. One of her greatest achievements in aeronautical research was her contribution to the development of the “thin sweptback tapered wing,” which revolutionized flight and became the aviation industry standard. Her life story was essentially unknown until she was briefly mentioned in the highly acclaimed book Hidden Figures: The American Dream and the Untold Story of the Black Women Mathematicians Who Helped Win the Space Race (2016), by Margot Lee Shetterly. Hidden Figures, which was made …

Huddleston, John Wesley

John Wesley Huddleston is best known as a struggling farmer who found two diamonds on the surface of his field near Murfreesboro (Pike County) in August 1906 and made himself and his state famous. Soon after the discovery, he was recognized as the first person outside South Africa to find diamonds at an original volcanic source. In the process, he also became the controversial subject of numerous folk tales. A native of Pike County, John Huddleston was born in 1862 to David Fielding Huddleston and America White Huddleston. He had seven siblings before his mother’s death in the early 1870s and gained three step-sisters after his father’s remarriage to Francis Carey. In 1886, Huddleston wed Sarah A. Keys, the mother …

Hunter, Carl Glenn

Conservationist Carl Glenn Hunter achieved prominence in two branches of the Arkansas outdoors—its fauna and its flora. Activities with wildflowers of the state made him a household name in Arkansas and beyond after his retirement as a wildlife biologist. Carl Hunter was born on August 30, 1923, in Little Rock (Pulaski County). He graduated from Little Rock High School (now Central High School) in 1941 and received a bachelor of science in agriculture degree from the University of Arkansas (UA) in Fayetteville (Washington County) in 1945. In college, Hunter worked part time for the Arkansas Game and Fish Commission (AGFC); he became a full-time employee in July 1945. He was one of the first hires of the agency after it …

Hydroelectricity

Hydroelectric power is the electricity generated by the gravitational force of falling or flowing water through a turbine connected to a power generator. The three major types of hydropower facilities include reservoirs (high dams), in-stream (low dams), and pumped-storage. The most common type is the high dam, which creates significant reservoirs behind the dam (e.g., Hoover Dam). In 1882, the world’s first hydroelectric power station, located in Appleton, Wisconsin, produced 12.5 kilowatts of electrical power. Also in the early 1880s, a similar facility opened in New York City. Since these early facilities, hydroelectric power from the nation’s waterways has proliferated. Hydroelectric development in Arkansas can generally be grouped into three time periods—1924–1930; 1944–1973; and 1988–1999—and under three sponsoring agencies: Arkansas …

Hymenoptera

aka: Ants
aka: Bees
aka: Wasps

Hymenopterans belong to the Phylum Arthropoda, Subphylum Labiata, Superclass Hexapoda, Class Insecta, and Order Hymenoptera. It is a large order of insects with over 150,000 described species comprising the sawflies, woodwasps, ichneumonids, chalcids, wasps, bees, and ants. In addition, there are over 2,000 extinct taxa. The order ranks third in the top five orders of insects in terms of total number of species. Many examples of this order are found in Arkansas, including the invasive fire ant. The Hymenoptera are divided into two suborders: the Symphyta (which have no waist) and the Apocrita (which have a narrow waist). Symphytans include the horntails, sawflies, and parasitic wood wasps. They have an unconstricted junction between the thorax and abdomen and a serrated …

Ictaluridae

aka: Catfishes
aka: Bullheads
aka: Madtoms

The Ictaluridae is a family of North American native fishes belonging to the Class Siluriformes. The Ictaluridae family also belongs to the Superorder Ostariophysi, the second-largest superorder of fish. This diverse group, present on all continents except Antarctica, contains 10,758 species—more than twenty-eight percent of known fish species in the world and seventy-two percent of all freshwater species. The family proper includes about seven genera and fifty-one species, some commonly known as bullheads, catfishes, and madtoms. As such, it is the largest family of freshwater fishes endemic to North America. In Arkansas, they are easily recognized as the only fishes in the state with four pairs (two on the snout, two on the end of maxillae, and four on the …

Information Galore

aka: Infogo

Information Galore, Inc., (a.k.a. Infogo) of El Dorado (Union County) was the first commercial Internet service provider (ISP) in Arkansas. Although the company was short-lived, it had a notable impact upon economic and educational initiatives in southern Arkansas, as well as parts of Texas and Louisiana. Infogo was founded by six individuals. John Gray was a world-famous geologist who was appointed to serve on the Arkansas Geological Commission (now Arkansas Geological Survey) several times by Governor Bill Clinton and who did work for the United Nations. Gray, along with Watt McKinney, Leon Wood, William L. (Billy) Cook, and Robert McKinney each invested $5,000. Joe Brazeal was a board member of ARKnet, the state’s educational computer network, and provided technical expertise …

Insects

Insects account for over half of all species described thus far worldwide, and they are the dominant form of life in terrestrial environments. It is estimated that 35,000 to 40,000 species of insects live in Arkansas, including around 10,000 species of beetles, around 9,000 species of flies, nearly 8,000 species of bees and wasps, and around 5,000 species of moths and butterflies. The remainder make up small orders such as the bristletails, mayflies, dragonflies and damselflies, cockroaches, mantids, termites, stoneflies, grasshoppers and crickets, earwigs, stick insects, book and bark lice, chewing and sucking lice, and true bugs and lacewings and their relatives. It is still not uncommon to find species in Arkansas that are unnamed and new to the scientific …

Instructional Microcomputer Project for Arkansas Classrooms (IMPAC)

The Instructional Microcomputer Project for Arkansas Classrooms (IMPAC) was an innovative program that helped make emerging microcomputer technologies a key component of education in Arkansas. Influential across the nation, IMPAC was cited for excellence by Electronic Learning, Instructor Magazine, Pro Education, Information Week, the National Governors Association, the Congressional Office of Technology Assessment, Nelson B. Heller & Associates, and the Southwest Education Development Laboratory. A number of Arkansas educators made significant efforts in laying a foundation for the use of microcomputers in instruction, as well as providing for technical support and workshops for teachers and school administrators, K–12. New technologies of the 1980s included networking microcomputers, the progression toward online resources, computer-assisted instruction and multimedia, and instructional management software for …