364 Obituary, 



beside the age of the Ontario shore and modern St. Lawrence 

 River; among the Niagara fossils he studied especially grapto- 

 lites. Moreover, he wrote valuable papers dealing with the 

 geological development of the West Indies and Central America, 

 the geography of submarine valleys, and great changes of level 

 of land and sea. 



Three years ago Dr. Spencer presented to the University of 

 Manitoba his comprehensive and valuable collection of minerals 

 and fossils. He resided in Washington, D. C, from 1900 until 

 a year ago, when he returned to Toronto. His death is a great 

 loss to science, and to his numerous friends, for his character as 

 a man, and his work as a naturalist gained for him the admira- 

 tion and gratitude of the scientific world. theo. holm. 



Clinton, Md. 



Dr. Joel Asaph Allen, the veteran zoologist, died on August 

 29 in his eighty-fourth year. Born in Springfield, Mass., on 

 July 19, 1838, he was one of the well-known group of pupils of 

 Louis Agassiz whom he accompanied to Brazil in 1.865. He was 

 early connected with the Museum of Comparative Zoology in 

 Cambridge, as also in a special capacity with the U. S. Geological 

 Survey. In 1885 he accepted the curatorship of mammalogy and 

 ornithology in the American Museum of Natural History; this 

 position he held for thirty-six years until he was made honorary 

 curator in 1921. His original papers on natural history were 

 very numerous ; in addition to these he did important editorial 

 work, conspicuouslv with the Auk (1884-1911) and the Bulletin 

 of the American Museum (1886-1918). 



Professor Victor von Lang, the distinguished Austrian min- 

 eralogist and physicist, died in Vienna, at the age of eighty-one 

 years. The end came after a lingering illness, aggravated by the 

 unfortunate conditions existing since the war. 



Professor Julius von Hann, the well-known meteorologist, 

 director of the " Zentralanstalt flir Meteorologie und Geodyna- 

 mik ' ' in Vienna, died recently in his eighty-third year. 



M. Alfred Grandidier, eminent as a geographer, and explorer, 

 died on September 12 at the age of eighty-four years. 



Dr. a. S. F. Leyton, the English pathologist, died on Septem- 

 ber 21, at the age of fifty-two years. 



Samuel Stockton Voorhees, engineer chemist of the Bureau 

 of Standards, died on September 23 in the fifty-fifth year of his 

 ao-e. 



