\'ol. Xxix] ENTOMOLOGICAL NEWS. I57 



OBITUARY. 



Dr. Samuel Gibson Dixon, President of The Academy of 

 Natural Sciences of Philadelphia since 1896, and Commis- 

 sioner of Health for the State of Pennsylvania since 1905, 

 died in Philadelphia, February 26. 1918, after an illness of 

 eight months. He was born in Philadelphia, March 23, 1851.. 

 studied successively law and medicine in the University of 

 Pennsylania, and bacteriology and hygiene in King's Col- 

 lege, London, and Pettenkofer's laboratory at Munich. He 

 was assistant demonstrator in physiology^ in the University of 

 Pennsylvania 1886-88, professor of Hygiene 1888-90, and later 

 a trustee of the same institution. His activity in The Academy 

 of Natural Sciences began about 1890 in connection with 

 bacteriological work and in the following year he became a 

 curator, a function which he filled to the end of his life. 

 Largely through his efforts the Legislature of Pennsylvania 

 was induced to make a number of appropriations to the Acad- 

 emy by means of which its buildings were greatly extended 

 and strengthened. These additions and improvements were 

 his chief contribution to the institution's progress and welfare 

 and will stand as an enduring monument to his labor and 

 devotion. 



As Commissioner of Health for Pennsylvania he took much 

 interest in the relation of insects to disease, directed the mak- 

 ing of a mosquito survey of the State in 1906 by Mr. H. L. 

 Viereck (to which references will be found in the News xvii, 

 150; xviii. 29-30), and promoted investigations of the pos- 

 sible role played by flies in the transmission of infantile par- 

 alysis. 



Charles Arthur Hart was born at Ouincy, Illinois, Oc- 

 tober 12, 1859, and from 1884 to the day of his sudden death, 

 Febrviary 18, 1918, was connected with the office now officially 

 designated as the Illinois State Natural History Survey. 



That the collections of the Survey are among the largest. 



