SCIENCE 



Friday, September 24, 1909 

 coxTEyrs 



Samuel William Johnson: Pbofessoe Thomas 

 B. OsBORXE 385 



The British Association for the Advancement 

 of Science: — 

 Address of the President to the Physiolog- 

 ical Section: Pbofessoe E. H. Stabling .. 389 



Vaccine Therapy and Immunization 401 



The Xumber of Students in the Russian Uni- 

 versities 402 



Scientific Xotes and Xews 402 



University and Educational News 404 



Discussion and Correspondence: — 



The Country Boy: Db. W. J. Spillman. 

 Doctorates conferred by American Univer- 

 sities: Pbofessob J. McKeen Cattell. 

 The Somenclatorial Court: Db. Chas. B. 

 Davenpokt 405 



Scientific Books: — 



Iddings on Igneous Rocks: Whitman 

 Cross. Orruck on Railroad Structures and 

 Estim<ites: Pbofessoe C. F.Allen. Abder- 

 halden on Eiweisschemie : Db. P. A. Levene 408 



Scientific Jourtials and Articles 412 



Special Articles: — 



On Magnetization and Angular Accelera- 

 tion: Pbofessoe S. J. B.\bnett. Nitrify- 

 ing Bacteria in Xorth Carolina Soils: 

 Kabl F. Kelleb and T. R. Robinson .... 413 



Second Annual Spring Conference of the 

 Geologists of the Northeastern United 

 States: Db. Edoab T. Wheeey 414 



MSS. iDtc-nded for publication and books, etc., intended for 

 review should be sent to the Editor of Sciesce, Garrlson-on- 

 Hudson. N. Y. 



SAMUEL WILLIAM JOHXSOy 

 In the death of Samuel William Johnson 

 the chemists of America have lost one more 

 from that small band who, two generations 

 ago, undertook to extend and develop the 

 beginnings which had been made to estab- 

 lish laboratories for instruction in chemis- 

 try and to apply this science to the indus- 

 tries of the country. Among these men, 

 most of whom have already passed away, 

 few left a greater impress on American 

 chemistry or American chemists than did 

 Professor Johnson, for his whole life was 

 devoted to training workers in his chosen 

 field, to making others realize what chem- 

 istry could do for them and to developing 

 institutions and methods to extend the 

 knowledge of chemistry and make this 

 available to those engaged in productive 

 occupations. The principal field to which 

 he devoted his efforts was the application 

 of science to agriculture, the results of 

 which efforts are far better appreciated to- 

 day, when the practical returns are so ap- 

 parent than they were during the years of 

 his greatest activity when he was patiently 

 struggling against the conservatism of the 

 so-called practical men who were persuaded 

 with difficulty to make the beginning which 

 was essential to demonstrate the truth of 

 what he was trying to teach them. 



Professor Johnson was born July 3, 

 1830, in Kingsboro, Fulton County, New 

 York. His parents were of Connecticut 

 origin but were taken by their parents to 

 New York state when children. Although 

 his father spent most of his active life in 

 successful business he early retired to a 

 large and fertile farm, soon after 1S30, 



