450 SCIENTIFIC NOTES AND NEWS 



GivOCK, Robert Webb, Preston James, and William Russell, 

 geologic aids. 



Messrs. J. B, Baylor, J. B. Boutwell, and E. F. Dickins, officers 

 of the U. S. Coast and Geodetic Survey, have been placed on retired 

 status under the Retirement Act. 



Dr. William Mansfield Clark, physical and biological chemist at 

 the Dairy Division, Bureau of Animal Industry, U. S. Department of 

 Agriculture, was appointed Professor of Chemistry and head of the 

 chemical division of the Hygienic Laboratory on July i. 



Mr. T. Nelson Dale, geologist of the U. S. Geological Survey, has 

 retired from active service, under the provisions of the Retirement 

 Act. 



Mr. J. S. DiLLER, of the U. S. Geological Survey, who was taken 

 seriously ill while on field work in Arizona, has recovered after an 

 operation and is in New England recuperating his strength. 



Mr. Arthur Jackson Ellis, geologist in the Water Resources 

 Branch of the U. S. Geological Survey, died on July 22, 1920, after 

 undergoing an operation for acute appendicitis. Mr. Ellis was born 

 January 6, 1885, in Sedgwick County, Kansas. After completing his 

 work at the University of Illinois and Northwestern University, he 

 entered the Geological Survey in 191 1 and devoted himself to the 

 economic geology of ground water, chiefly in Arizona, California, Con- 

 necticut, and Montana. During the war he was acting chief of the 

 Division of Ground Waters, in the absence of 'Mr. O. E. Meinzer, 

 and made numerous reports on water supplies for the Army and Navy. 

 He was a member of the Academy, the Geological Society, and the 

 Society of Engineers. 



Dr. Walter Faxon, until recently curator in charge of mollusca and 

 Crustacea at the Museum of Comparative Zoology, Harvard Uni- 

 versity, and a non-resident member of the Academy, died on August 

 10, 1920, in his seventy-third year. Dr. Faxon was born at Roxbury, 

 Massachusetts, February 4, 1848. He had been associated with the 

 University since his graduation therefrom in 1871, having been in- 

 structor and assistant professor of Zoolog>' as well as curator in the 

 Museum. He was a member of the Biological Society of Washington 

 as well as of the Academy. 



Sr. J. de Sampaio Ferraz, director of the Brazilian Meteorological 

 Service, Rio Janeiro, visited the scientific institutions and laboratories 

 of Washington in June. 



Mr. HoYT S. Gale, who recently returned from a six months' 

 trip in Bolivia, resigned from the U. S. Geological Survey on August 3, 

 to take up private work. 



