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Van Dyck, Cornelius Van Alen

(Encyclopedia)Van Dyck, Cornelius Van Alen, 1818–95, American missionary, b. Kinderhook, N.Y. In 1840 he went to Syria as a medical missionary. In 1846 he was ordained in the Congregational ministry. Besides bein...

gene

(Encyclopedia)gene, the structural unit of inheritance in living organisms. A gene is, in essence, a segment of DNA that has a particular purpose, i.e., that codes for (contains the chemical information necessary f...

Hosack, David

(Encyclopedia)Hosack, David hŏsˈək [key], 1769–1835, American physician, surgeon, and author; for a time he was Samuel Bard's partner (see under Bard, John). He was an authority on the management of yellow fev...

Annapolis Convention

(Encyclopedia)Annapolis Convention, 1786, interstate convention called by Virginia to discuss a uniform regulation of commerce. It met at Annapolis, Md. With only 5 of the 13 states—Delaware, New Jersey, New York...

Odysseus

(Encyclopedia)Odysseus yo͞olĭsˈēz [key], in Greek mythology, son and successor of King Laertes of Ithaca. A leader of Greek forces during the Trojan War, Odysseus was noted (as in the Iliad) for his cunning str...

Ouachita

(Encyclopedia)Ouachita wôˈshĭtôˌ [key], river, c.600 mi (970 km) long, rising in the Ouachita Mts., W Ark. It flows east, southeast, and south through a cotton-producing region of S Arkansas and NE Louisiana a...

McHenry, James

(Encyclopedia)McHenry, James, 1753–1816, American political leader, b. Ireland. He emigrated to Philadelphia in 1771 and, after studying medicine under Benjamin Rush, served as a surgeon in the Continental Army i...

Lick Observatory

(Encyclopedia)Lick Observatory, astronomical observatory located on Mt. Hamilton, Calif., near San Jose; the first mountaintop observatory in the world, it was founded through gifts made by James Lick in 1874–75 ...

Keeler, James Edward

(Encyclopedia)Keeler, James Edward, 1857–1900, American astronomer, b. La Salle, Ill. At the age of 21 he went on the Naval Observatory expedition to Colorado to observe the solar eclipse of July, 1878. In 1886 h...

Adams, Samuel Hopkins

(Encyclopedia)Adams, Samuel Hopkins, 1871–1958, American author, b. Dunkirk, N.Y., grad. Hamilton College, 1891. He was a reporter for the New York Sun (1891–1900) and then joined McClure's Magazine, where he g...