322 Scientific Intelligence. 



so that another part will appear, which is promised during the 

 course of the present year. h. l. w. 



6. Bibliography of the Metals of the Platinum Group. Plati- 

 num, Palladium, Iridium, Rhodium, Osmium, Ruthenium. 

 1748-1896. By Jas. Lewis Howe, pp. 318, Washington, 1 897, 

 Smithsonian Miscellaneous Collections, 1084. — This exhaustive 

 bibliography has been prepared by Prof. J. L. Howe under the 

 auspices of the Committee of the American Association having 

 charge of indexing chemical literature. Prof. H. Carrington 

 Bolton is chairman of the committee. 



OBITUARY. 



William A. Rogers was born at Waterford, Conn, on the 

 13th of November, 1832. He entered Brown University in 1853 

 and graduated in 1857. In 1859 he was elected Professor of 

 Mathematics in Alfred University, N. Y. and remained, there 

 until 1870. During this period he spent a year as a special 

 student in the Harvard College Observatory and eighteen months 

 in the U. S. Navy. He built and equipped the Alfred Observa- 

 tory in 1865, and the subsequent year being appointed Professor 

 of Industrial Mechanics in Alfred, he spent several months in 

 preparation for his new duties in the Sheffield Scientific School. In 

 1870 he was appointed assistant, and in 1875 Assistant Professor 

 in the Harvard Observatory, where he remained until 1886, when 

 he accepted the Professorship of Astronomy and Physics in 

 Colby University, Waterville, Me. In 1897 he was elected Bab- 

 cock Professor of Physics in Alfred University, expecting to enter 

 upon his new duties on April 1st, 1898. Professor Rogers was a 

 man of remarkable powers as an observer and of exceptional 

 acuteness as an experimenter. His work at the Harvard Obser- 

 vatory in the former line ranks with the best work done there ; 

 and he stood easily at the head of themetrologistsof this country 

 in the line of linear measurement. He was elected to the Ameri- 

 ican Academy in Boston in 1873, a Fellow of the Royal Microscopi- 

 cal Society of London in 1880, President of the American Micro- 

 scopical Society in 1887, Vice-President of the American Asso- 

 ciation in 1 883 and a member of the National Academy of Sciences, 

 in 1885. In 1880 Yale University gave him the degree of A.M., 

 in 1886 he received that of Ph.D. from Alfred University and in 

 1892 Brown University conferred upon him the degree of LL.D. 

 He died in Waterville, March 1st, 1898. His list of published 

 papers includes about 70 titles. g. r. b. 



