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Ormerod, Eleanor Anne

(Encyclopedia)Ormerod, Eleanor Anne ôrˈmərŏd [key], 1828–1901, English economic entomologist. She aided the Royal Horticultural Society in forming a collection of insect farm pests and was awarded the Flora m...

Agassiz, Louis

(Encyclopedia)Agassiz, Louis (Jean Louis Rodolphe Agassiz) ăgˈəsē [key], 1807–73, Swiss-American zoologist and geologist, b. Môtiers-en-Vuly, Switzerland. He studied at the universities of Zürich, Erlangen ...

astringent

(Encyclopedia)astringent əstrĭnˈjənt [key], substance that shrinks body tissues. Astringent medicines cause shrinkage of mucous membranes or exposed tissues and are often used internally to check discharge of s...

Nuttall, George Henry Falkiner

(Encyclopedia)Nuttall, George Henry Falkiner nŭtˈôl [key], 1862–1937, American-British bacteriologist, b. San Francisco, M.D. Univ. of California, 1884, Ph.D. Univ. of Göttingen, 1890. In 1899 he became assoc...

Thomas, Cyrus

(Encyclopedia)Thomas, Cyrus, 1825–1910, American anthropologist and entomologist, b. Kingsport, Tenn. He was a lawyer, then a minister (1865–69) of the Evangelical Lutheran Church. He was associated with the U....

John Maurice of Nassau

(Encyclopedia)John Maurice of Nassau, 1604–79, Dutch general and colonial administrator, a prince of the house of Nassau-Siegen; grandnephew of William the Silent. The Dutch West India Company appointed him (1636...

Muller, Hermann Joseph

(Encyclopedia)Muller, Hermann Joseph mŭlˈər [key], 1890–1967, American geneticist and educator, b. New York City, grad. Columbia (B.A., 1910; Ph.D., 1916). A student of Thomas Hunt Morgan, he taught (1915–18...

Tinbergen, Nikolaas

(Encyclopedia)Tinbergen, Nikolaas, 1907–88, Anglo-Dutch zoologist, b. Netherlands. He received his Ph.D. in 1932 from the Univ. of Leiden, where he became professor of zoology in 1947. In 1949 he joined the facul...

stonefly

(Encyclopedia)stonefly, any insect of the order Plecoptera. North American species, of which there are more than 200, are yellowish, greenish, or brownish in the adult stage and have transparent wings, usually two ...

communicable diseases

(Encyclopedia)communicable diseases, illnesses caused by microorganisms and transmitted from an infected person or animal to another person or animal. Some diseases are passed on by direct or indirect contact with ...