Science and Medicine

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Entry Category: Science and Medicine - Starting with S

Saline Memorial Hospital

Originally known as the Saline County Memorial Hospital, present-day Saline Memorial Hospital was constructed in 1954 in Benton (Saline County). The hospital was created in response to the rising population of the Benton area following World War II, the Korean War, and Saline County’s postwar industrial boom. The hospital had forty-two beds at its creation and cost about $325,000 to build. In 2017, Saline Memorial Hospital encompassed approximately 400,000 square feet, with 177 beds and more than 180 active and consulting physicians. According to census data, the population of Benton was 3,502 in 1940 and had nearly doubled by 1950 to 6,277. In February 1955, Saline County judge Charles O. Smithers named the first governing board for the hospital. Dr. …

Salmonids

aka: Trout
aka: Salmon
Salmonids include chars, graylings, salmon, trout, and freshwater whitefishes, all of which belong to the superorder Protacanthopterygii, order Salmoniformes, family Salmonidae, three lineages or subfamilies (Coregoninae, Thymallinae, and Salmoninae), eleven extant genera, and about 120 species. There are thirty-nine species known in North America. The family is widely distributed, with various species found north of the equator in Asia, Europe, and North America. Some important North American genera include Coregonus, Oncorhynchus, Prosopium, Salmo, Salvelinus, and Thymallus. Although no members are native to Arkansas, salmonids have been introduced, primarily for purposes of sports fishing. The family initially appears in the fossil record in the middle Eocene (48 to 38 million years ago) from fossils found in central British Columbia, Canada. A …

Sanitation

The term “sanitation” is used today to describe the elimination or control of dangerous bacteria, especially in drinking water and food supplies and through personal hygiene. Prior to the development of the germ theory and the subsequent discoveries in bacteriology and microbiology, the term covered all elements of health and well-being. Sanitation, in the sense of the elimination of dangerous bacteria, is common to animals, which instinctively try to keep their feces and urine at a distance from their habitations. When humans abandoned nomadic patterns and resided in settled communities, more complicated arrangements had to be worked out. Examples practiced in the absence of scientific proof included the use of latrines, attempts to protect the purity of water supplies, and …

Schilberg, Richard

Richard Schilberg was an aviation pioneer whose early efforts in Stuttgart (Arkansas County) made him Arkansas’s first acknowledged aircraft manufacturer. Richard Schilberg was born on September 28, 1887, at Canada, Kansas, the son of Gottlieb Schilberg and Juliana Heidt Schilberg. He moved to Stuttgart in 1909 and opened a welding shop, initially specializing in agricultural machinery. He married Gladys Fricker on January 28, 1913. They divorced in 1926 and he married Mable Stilzen in 1927. The couple took their first airplane rides in June 1913, when one of Arkansas’s first aerial exhibitions came to the town. Increasingly interested in flying, he began building aircraft in Stuttgart by 1914, becoming the first major promoter of aviation in the Grand Prairie region. …

Schoppach, Annie

aka: Annie Adelia Anette Ryerse
Annie Schoppach was the first female graduate of the Medical Department of the University of Arkansas (now the College of Medicine of the University of Arkansas for Medical Sciences). She practiced medicine in Little Rock (Pulaski County), entering a profession that was almost entirely male dominated. Annie Adelia Anette Ryerse was born in Port Ryerse, Ontario, Canada, on May 3, 1859, the daughter of James and Sarah Ryerse. The Ryerse family was the most prominent family in the area, her great-grandfather having been the lieutenant governor of the Western District of Upper Canada. She experienced a great deal of loss early in her life. Her mother died when she was a small child. Later, her twin sister died. Her paternal …

Science and Technology

Arkansas has had a rather conflicted relationship with science and technology throughout its history. On the one hand, the state existed for a long time on the American frontier, separated from the intellectual and academic centers of the rest of the nation; hence, its residents have been popularly perceived throughout history as possessing an anti-intellectual strain, an image on occasion reified during, for example, controversies regarding the place of evolutionary theory in public education. On the other hand, political leaders, and the people themselves, fairly readily support scientific research that promises to have an immediate economic benefit for the state of Arkansas. Given Arkansas’s place as a largely agricultural state, it is no surprise that much of this research has been …

Scorpionflies

aka: Mecopterans
Scorpionflies belong to the Phylum Arthropoda, Class Insecta, Superorder Endopterygota, and Order Mecoptera. There are about 605 species within thirty-four genera and nine families worldwide. There are also 400 known fossil species in about eighty-seven genera, which are more diverse than even the extant members of the order. Sixteen species representing three families of scorpionflies occur in Arkansas. Most mecopterans live in moist environments, although adults of a few species are found in hotter semi-desert habitats and may be active and noticeable only for short intervals of the year. Those in the family Panorpidae generally inhabit broad-leaf woodlands with abundant damp leaf litter. Snow scorpionflies (family Boreidae) appear in winter and are often seen on snowfields and on moss; the …

Sculpins

aka: Cottids
Sculpins belong to the order Scorpaeniformes and superfamily Cottoidea. There are about 11 families, 149 genera, and 756 species. They reach their maximum diversity in the northern Pacific Ocean. The family Cottidae is the largest family, with approximately 258 species; the second-largest family is the Agonidae (marine poachers), with 47 species. The most speciose genus, Cottus (freshwater sculpins), is confined to North America and Eurasia. It includes about 68 taxa that are native to the Northern Hemisphere (Palearctic and Nearctic realms). There is fossil material similar to Cottus that dates to at least the Miocene Epoch (23 to 5.3 million years ago). Most sculpins are generally less than 15 centimeters (6 inches) in length, although a few species can reach …

Senior Centers

By 2023, Arkansas was home to eight regional senior centers that provided educational, nutritional, and recreational services for people over age sixty. Senior centers are generally available at no cost to anyone older than sixty, although some may require a donation or have different age restrictions. Depending on the location of the center, seniors can socialize, participate in wellness activities, and receive a hot lunch. They may also take part in various programs including art courses, bingo, card games, computer instruction, dancing, exercise programs, pool, quilting, strength training, wellness classes, working on puzzles, and yoga. Centers may also provide home-delivered meals for housebound elderly clients, transportation for seniors who are unable to drive, and referrals to other senior-based services if …

Sex Education

The United States does not federally mandate sex education in public schools. Instead, the government leaves decisions about if and how to teach sex education up to the individual states, and many states leave the decision up to individual school districts. As a result, by 2022, sex education was only state mandated in twenty-nine states and the District of Columbia. Of these, twenty-eight mandated that the education cover sex and HIV. Twenty-two of the twenty-nine states required that discussion of sex and/or HIV education be medically accurate. However, the definition of “medically accurate” was not the same in all twenty-two states. For various reasons—but especially because of strict federal government funding requirements—America continues to use an abstinence-only or “abstinence-plus” approach …

Shannon, Robert Fudge

A pioneer in mental healthcare for Arkansas, Robert Fudge Shannon was the first chief resident in psychiatry at the University of Arkansas Medical School, now the University of Arkansas for Medical Sciences (UAMS). He also established the state’s first psychiatric outpatient program for adolescents, helped launch Arkansas’s first private psychiatric inpatient treatment unit, founded the first private psychiatric clinic in the state, and served as commissioner of mental health. Born on April 15, 1933, in Melbourne (Izard County), the second of three children of newspaperman Karr Shannon and Ollie Ellen (Fudge) Shannon, Bob Shannon attended school in Melbourne until 1944, when the family moved to Little Rock (Pulaski County). He graduated from Little Rock High School (now Little Rock Central …

Sherman, Jerome Kalman

Jerome (Jerry) Kalman Sherman, considered the “Father of Sperm Banking,” was a professor at the University of Arkansas for Medical Sciences (UAMS) from 1958 until 1992, when he became professor emeritus, remaining active until 1994. During his decades as a research scientist and teacher of anatomy, he significantly shaped the field of cryobiology—the study of biological materials at low temperatures—and the emergence of human sperm banks as part of reproductive medicine. Through his involvement in multiple charitable organizations in the Little Rock (Pulaski County) area, he has also improved the lives of many Arkansans. Jerry Sherman was born in Brooklyn, New York, on August 14, 1925, the only child of Murray and Beatrice Sherman. An eager student, he graduated from …

Shrews

Shrews are very small, secretive, mouse-like mammals that inhabit moist, shady woodland areas. Generally, they have long, flexible, pointed snouts and very small eyes and ears. Their fur is soft and dense, and most species have prominent scent glands. All shrews belong to the Family Soricidae (subfamilies Soricinae, Crocidurinae, Myosoricinae) and Order Eulipotyphia, which also includes moles, shrew-like moles, desmans, gymnures, hedgehogs, and solenodons. True shrews, talpids, and solenodons were formerly grouped in the clade Soricomorpha; however, Soricomorpha has been found to be paraphyletic (descended from a common evolutionary ancestor or ancestral group, but not including all descendant groups). Members of this order are nearly cosmopolitan in distribution, with the exception of Australia, New Zealand, Antarctica, extreme southern South America, …

Shrimps

aka: Prawns
Arkansas shrimps belong in the cosmopolitan Family Palaemonidae (subfamily Palaemoninae) and Order Decapoda, which also contains the crayfishes. Taxonomically, shrimps are differentiated from crayfishes by their first pair of legs with chelae and the abdomen laterally compressed, while crayfishes have the first three pairs of legs with chelae and their abdomens dorsoventrally flattened. The Palaemonidae is a large family (950 species within 137 genera) and is distributed on all the continents except in the deep oceans, in temperate and tropical regions, and having representatives in marine, brackish, and fresh water. Representatives of this family are mainly carnivores that feed on small invertebrates. The most prominent genus in the family is Macrobrachium, with over 240 species that include commercially fished species; …

Shrubs

In 2016, a total of 436 kinds of woody plants were known to occur in the wild in Arkansas, comprising 419 species plus another seventeen varieties and subspecies. Of these, 185 can be considered trees, 189 are best described as shrubs, and sixty-two are woody vines. In some cases it is difficult to draw a hard line between these categories, and various references differ in their criteria for each. For the purposes of this entry, however, each category is defined as follows: Trees are defined as perennial, often single- or relatively few–stemmed woody plants typically greater than five meters (sixteen feet) in height at maturity. Shrubs are defined as perennial, often multi-stemmed woody or semi-woody plants usually less than five …

Silitch, Mary Frances

Mary Frances Files Silitch is the first woman to be editor-in-chief of a national aviation magazine. A licensed pilot, she has flown 250 kinds of aircraft and logged 5,000 hours of flight. Mary Frances Files was born on November 9, 1935, in Little Rock (Pulaski County) to William Thomas Files and Johnnie Caldwell Files of Parkdale (Ashley County); she has two sisters. Her first flight was in an open-cockpit crop-duster airplane over the family farm at the age of four. She attended schools in Parkdale and Wilmot (Ashley County) but graduated from All Saints Episcopal School in Vicksburg, Mississippi. She attended Southwestern at Memphis (now Rhodes College), where she began her journalism career as the managing editor of the Sou’wester, …

Silverfish

aka: Bristletails
Silverfish are small, wingless insects in the order Zygentoma (formerly Thysanura). There are four families: Lepidotrichidae (single species), Lepismatidae (about 200 species), Maindroniidae (three species), and Nicoletiidae (about twenty species). In the late twentieth century, it was recognized that the two suborders were not sister taxa; therefore Thysanura was paraphyletic, and the two suborders were each elevated to the status of an independent monophyletic order, with Archaeognatha the sister taxon to the Dicondylia, including the Zygentoma (fishmoths, firebrats, and silverfish). A nicoletiid, Speleonycta ozarkensis, occurs in eight different cave systems in Arkansas in Benton and Newton counties and in Oklahoma in Adair, Cherokee, and Delaware counties. In concert with jumping bristletails (Order Microcoryphia), the predecessors of silverfish are considered the …

Slime Molds

Slime molds are among the more interesting yet relatively little known organisms found in Arkansas. They do not have a particularly attractive name, but some examples produce fruiting bodies that are miniature objects of considerable beauty. The organisms commonly referred to as slime molds actually belong to two different taxonomic groups—the myxomycetes and the dictyostelids. Members of both groups are common-to-abundant organisms in forests throughout Arkansas, but only the myxomycetes (also called plasmodial slime molds) can be observed directly in nature. As a result, the myxomycetes are by far the better known group, and to most people (including many biologists), they are the only “slime molds” of which they are aware. However, the dictyostelids (also known as cellular slime molds) …

Smallpox

Smallpox is an infectious disease characterized by the formation of a rash and blisters across the face and extremities. With an overall mortality rate of approximately thirty-five percent, it was one of the most feared diseases in the world before coordinated vaccination efforts resulted in the disease being eradicated in 1979. In Arkansas, smallpox greatly affected Native Americans and played a role in the creation of later public health initiatives. Smallpox was first introduced into North America by European explorers, who brought to the New World any number of diseases to which Native Americans had not previously been exposed. Some historians estimate that perhaps ninety percent of the indigenous population of the Americas may have been killed by diseases brought …

Smelts

aka: Osmerids
Smelts belong to the family Osmeridae and order Salmoniformes. There are seven genera and about eleven species. Fishes of the genus Osmerus, to which the rainbow smelt (O. mordax) belongs, include the following: a North Pacific and Arctic species, O. dentex; the European smelt (O. eperlanus) of the Eastern North Atlantic; and the landlocked pygmy smelt (O. spectrum) of eastern Canada and New England, which some authorities suggest is not a valid species. In general, smelts are north circumpolar in geographic distribution, and they occur in marine and freshwater habitats in Asia, Europe, and North America. They date to the Paleocene Epoch (over 55 million years ago). The closest relatives are galaxioid (Protacanthopterygiid) fishes, and the marine argentinoid fishes are …

Smith, Morgan

Morgan Smith—a physician, administrator, and legislator—was a leader in the drive to improve public health and medical education in Arkansas. Following his service as dean of the Arkansas Medical School, now the University of Arkansas for Medical Sciences (UAMS), from 1912 to 1927, he represented Pulaski County as a Democrat in the state House of Representatives from 1928 to 1934. Born on March 8, 1868, in El Dorado (Union County), Morgan Smith was the second son of James Monroe Smith, who was a planter and merchant, and Mary Josephine Morgan Smith. He had two brothers and one sister. His father, who formerly served in various county offices, was a state senator and a representative from Union County. Educated in the …

Smith, Willis S.

Dr. Willis S. Smith was a regionally significant teacher, sheriff, farmer, doctor, and writer in early southwestern Arkansas. Willis Smith was born on August 10, 1810, in Todd County, Kentucky, a frontier community. He was the fifth of twelve children of Millington Smith and Barbara Barton Smith. He was the grandson and namesake of Revolutionary War soldier Willis S. Smith, who was killed at the Battle of Bunker Hill. Smith had little opportunity for an education, and he could barely read or write even at twenty years of age. He left his home in Johnson County, Illinois, for Rock Springs Theological Seminary in Rock Springs, Illinois, where he received sufficient education to become a teacher at the school himself. One …

Snake Fungal Disease

aka: Ophidiomycosis
Snake fungal disease (ophidiomycosis) is an emerging infectious disease of numerous species of snakes caused by the fungus Ophidiomyces ophiodiicola within the family Onygenacea. Formerly, Ophidiomyces was classified as the Chrysoporium anamorph of Nannizziopsis vriesii species complex (CANV species complex), a group of fungi that are frequently associated with emerging infections in various groups of reptiles. However, recent phylogenetic analyses have demonstrated that CANV represents a species complex that also includes fungi of the genera Nannizziopsis and Paranannizziopsis and that Ophidiomyces is known to occur only on both colubrid and viperid snakes. It was first definitively identified in 2006 in a population of timber rattlesnakes (Crotalus horridus) in New Hampshire. However, although identification has not been conclusively proven because cultures …

Sneed Tornado of 1929

aka: Tornado Outbreak of April 10, 1929
The only F5 tornado ever recorded in Arkansas destroyed the Sneed and Pleasant Valley communities in Jackson County on April 10, 1929, one of a series of twisters on that day that claimed at least fifty-four lives in the state. At least eight tornadoes hit northeastern Arkansas on April 10, 1929. The most powerful, with wind speeds of 261 to 318 miles per hour, formed near Batesville (Independence County) and traveled northeast, entering Jackson County at about 6:15 p.m., with a half-mile-wide path. As it approached Pleasant Valley (also known as Possum Trot) north of Swifton (Jackson County), people sought shelter in homes that were quickly destroyed by the tornado “dipping down into the farm communities as if a gigantic …

Snodgrass, William Anderson

William Anderson Snodgrass was an instructor at the University of Arkansas Medical School (which later became the University of Arkansas for Medical Sciences). During World War I, he organized Hospital Unit T and served as a major in the United States Medical Department in England and France. William Snodgrass was born on March 17, 1874, to Andrew J. Snodgrass and Elmira F. Masterfield Snodgrass at Murray, Kentucky. When he was ten, his family moved to Little Rock (Pulaski County). After completing public school and his premedical courses, he entered the Medical School of the University of Arkansas. He graduated in 1896 and was employed as Little Rock’s city physician in 1898. In 1898, he married Lelia Phillips, and they had …