1899.] natural sciences of philadelphia. 375 



August 1. 

 Mr. Benjamin Smith Lyman iu the Chair. 



Nine persons present. 



The deaths of J. Blodget Britton and Daniel G. Brintou, M.D., 

 members, were announced. 



In compliance with the recommendation of the Committee on 



the Hayden Memorial Geological Award, the medal and the interest 



on the fund for 1899 were conferred on Prof. Gilles Joseph 



GusTAVE Dewalque, of the University of Liege, Belgium. 



^ The following biographical note was presented with the report : 



G. J. GusTAVE Dewalque, Professor Emeritus of the Uni- 

 versity of Liege, Belgium, was born at Stavelot, December 2, 

 1826. He entered the University of Liege, received first prize 

 for a memoir on The Nature of Chemical Affinity in 1849 at 

 the University competition. He graduated as a Doctor of Medi- 

 cine, Surgery and Obstetrics in 1853, and Doctor of Natural 

 Sciences in 1854. The cholera having reappeared, he was made 

 resident physician of the temporary hospital of St. Julien in 1854; 

 then of St. Thomas in 1855. He sought, but Avithout success, 

 the microbe of cholera in the air, but proved the transmission of 

 the malady from man to the dog. He became a member of the 

 Council of Public Health of the province in 1857; General Sec- 

 retary in 1872; President in 1875, and Honorary President in 

 1895. He was one of the organizing members of the Malacologi- 

 cal Society in 1863, and of the Society of Public Medicine in 

 1877. He was Chairman of the Committee on Medical Topog- 

 raphy from its origin. 



He commenced instructing as supplementary Professor of Physics 

 and Chemistry in 1850 at the College of Lie'ge; was made 

 Demonstrator of the course of Human and Comparative Physi- 

 ology at the University in 1852, and joined with these functions, 

 at the request of A. Dumont, in 1855, those of Conservator of 

 the Mineral Collections and Instructor in Mineralogy and Geology 

 at the School of Mines. The unexpected death of his illustrious 

 master opened to him these chairs in 1857. L. G. de Koniuck very 



