Entry Category: Science and Technology - Starting with C

Wallace Henry Coulter was an engineer, inventor, and entrepreneur who was co-founder and chairman of Coulter Corporation, a worldwide medical diagnostics company headquartered in Miami, Florida. The two great passions of his life were applying engineering principles to scientific research and embracing the diversity of world cultures. Wallace Coulter was born on February 17, 1913, in Little Rock (Pulaski County) to Joseph R. Coulter and Minnie May Johnson Coulter. His father was a train dispatcher, and his mother was an elementary school teacher; he had one brother. Coulter spent his youth in McGehee (Desha County), graduating from McGehee High School. He attended his first year of college at Westminster College in Fulton, Missouri; his interest in electronics, however, led him …

John Storrs Cross became a national and international expert in all types of electronic communication as a member of the U.S. Department of the Interior, the U.S. Navy during World War II, and the U.S. Department of State, as well as the Federal Communications Commission (FCC). In Arkansas, he was the engineer for Hot Springs National Park in Hot Springs (Garland County) in the 1930s and ran a motel with his wife near Eureka Springs (Carroll County) in the later part of his life. John S. Cross was born in Birmingham, Alabama, on September 18, 1904, to Thomas C. Cross and Elise T. Cross. He had one younger sister, Elise. In his high school years, he attended the private McCallie …

Crustaceans (subphylum Crustacea) are a very large and diverse group of arthropods (invertebrate animals having an exoskeleton, jointed appendages, and segmented bodies). Crustaceans are distinguished by having paired mandibular jaws and maxillae, along with two pairs of antennae. Recent classifications include six classes within crustaceans—Branchiopoda, Remipedia, Cephalocarida, Maxillopoda, Ostracoda, and Malacostraca. The Classes of Crustacea Class Branchiopoda includes several groups of primitive aquatic and marine animals, including clam shrimp, the small fairy shrimp (less than one centimeter in length and living in temporary pools), and the “living fossil” tadpole shrimp. The most noteworthy brachiopods are the cladocerans, or water fleas, that make up many of the zooplankton in Arkansas lakes and ponds. These small, free-swimming animals are a critical food …

The Cyprinidae is a diverse family of mainly freshwater fishes belonging to the ostariophysian order Cypriniformes, collectively called cyprinids. They include carps, true minnows, and their relatives. The Cyprinidae is the largest and most diverse fish family and, in general, the largest vertebrate animal family, with about 3,160 species, of which only 1,270 are extant, divided into about 376 genera. The family occurs in Africa, Eurasia, and North America (northern Canada to southern Mexico). Only two species of cyprinids occur in true marine waters, daces (Tribolodon brandtii and T. sachalinensis) from eastern Asia, and a few stray into brackish water only very rarely. More than sixty-two species of cyprinids are known from Arkansas, which represents almost a third of the …