AVERY, SAMUEL (1865-1936), American chemist and educator, was born in Lamoille, Ill., on April 19, 1865. He gradu ated at Doane college, Crete, Neb., in 1887, and pursued graduate studies at the University of Nebraska. Later he studied at the University of Heidelberg, Germany, from which in 1896 he re ceived the degree of doctor of philosophy. After teaching chem istry in various capacities in the University of Nebraska and in the Nebraskan Agricultural Experiment Station, he was made head professor of chemistry in the university in 19o5. In 1908 he be came acting chancellor and in 1909 chancellor of the University of Nebraska. He lectured extensively on educational subjects and wrote many bulletins and other papers, chiefly on subjects con nected with organic chemistry. His chemical researches embraced investigations on glutaric acids, arsenical insecticides, the consti tution of Paris green, the extermination of prairie dogs, the action of lime and sulphur in cattle dips and the occurrence of prussic acid in sorghum and kaffir corn.