HENRY, WILLIAM English chemist, son of Thomas Henry (1734-1816), an apothecary and writer on chem istry, was born at Manchester on Dec. 12, One of his best known papers (Phil. Trans., 1803) describes experiments on the quantity of gases absorbed by water at different temperatures and under different pressures, the conclusion he reached ("Henry's law") being that "water takes up of gas condensed by one, two or more additional atmospheres, a quantity which, ordinarily com pressed, would be equal to twice, thrice, etc., the volume absorbed under the common pressure of the atmosphere." His Elements of Experimental Chemistry (1799) went through I I editions in 3o years. He died at Pendlebury, near Manchester, on Sept. 2, 1836. HENRYETTA, a city of Okmulgee county, Okla., U.S.A., 8om. E. of Oklahoma City, on Federal highways 75 and 266 and served by the Frisco and the Kansas, Oklahoma and Gulf railways. It has a landing field for aeroplanes. In 1910 the population was 1,671; in 1920, native white), and in 1930 it was 7,694 by the Federal census. The city is surrounded by oil and gas wells, coal and zinc mines, and farms producing chiefly cotton, corn, live stock, strawberries and other small fruits. Its industries include smelters, carbon and gasolene plants, and cotton gins. Henryetta was settled in 1901 and incorporated in 1903.