DOCTORATES IN BIOLOGICAL CHEMISTRY 



Conferred by American Universities, ig 1 2-' 13 ^ 



The names of recent reciplents of the Ph.D. degree in biochem- 

 ical science, with the subjects of the dissertations, are arranged 

 below in university groups : 



Columbia University.^ — Joseph Samuel Hepburn: Biochemical 

 studies of cholesterol. — Benjamin Horowitz: A study of the action 

 of ammonia on thymol. — Edgar Grim Miller, Jr.: Studies in patho- 

 logical chemistry; (I) Enzymes as possible factors in the develop- 

 ment of edema, (II) The lecithin content of the blood in syphiHs, 

 (III) Studies on dental caries. — Anton Richard Rose: Biochemical 

 studies of phyto-phosphates. — George Gilmore Scott: A physiolog- 

 ical study of the changes in Mustelus canis produced by modifica- 

 tions in the molecular concentration of the external medium. — 

 Clayton Sidney Smith: A study of the influence of cold-storage tem- 

 perature upon the composition and nutritive value of fish. — Charles 

 Weisman: Biochemical studies of expired air in relation to Ventila- 

 tion. 



Comell University. — George Ellsworth Thompson: An experi- 

 mental study of photoactive cells with fluorescent electrolytes. — 

 Eleanor VanNess VanAlstyne: The absorption of protein without 

 digestion. 



Harvard University. — Chaimcey J. Vallette Pettibone: The 

 quantitative estimation of urea in urine. 



Johns Hopkins University. — Lon A. Hawkins: The influence 

 of calcium, magnesium and potassium nitrates upon the toxicity of 

 certain heavy metals toward fungous spores. 



University of Chicago. — Aaron Arkin: The influence of chem- 

 ical substances upon immune reactions, with special reference to 



^Additional information regarding the Columbia doctors (and masters) in 

 biological chemistry is given on page 579, where may also be found the names 

 of successful Ph.D. candidates in botany, chemistry and zoology, whose minor 

 work was done, in part, in the Columbia departraent of biological chemistry. 



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