CHEMISTRY 71 



Mme. Curie is a Nobel Laureate and (with P. CURIE) 

 the author of a work "Traite de radioactivite" (2 vols., 

 Paris, 1910); LE CHATELIER, professor of chemistry, 

 a physical chemist of great eminence and versatility, 

 author of researches on chemical thermodynamics, 

 on pyrometry, the equilibria of alloys, and the micros- 

 copy of alloys; he has published "Recherches experi- 

 mentales et theoriques sur les equilibres chimiques," 

 (Paris, 1880), "Introduction a Tetude de la metallurgie," 

 (Paris, 1912), "Lecons sur le carbone, la combustion, les 

 lois chimiques" (Paris, 1908), and " La silice et les sili- 

 cates"; URBAIN, professor of chemistry, famous especially 

 for his investigations upon the rare earths, their separa- 

 tion and their spectroscopy, author of "Introduction a 

 1'etude de la Spectrochimie," (Paris, 1911); HALLER, 

 professor of organic chemistry, a specialist in the investi- 

 gation of camphor and its derivatives, of alcohol, and of 

 reactions of reduction, author of "Theorie generate des 

 alcools" (Paris, 1879), and "Les recents progres de la 

 Chimie organique" (3 vols., Paris, 1904-1908); G. 

 BERTRAND (of the Institut Pasteur), professor of biol- 

 ogical chemistry, a student of enzymes, especially the 

 oxydases, and of the sugars; CHABRIE, professor of 

 applied chemistry; Jean PERRIN, professor of physical 

 chemistry, who has conducted important investigations 

 on the Brownian movement, the theory of colloids, and 

 the molecular kinetic theory, author of "Rayons catho- 

 diques et rayons de Roentgen" (Paris, 1897), "Traite 

 de Chimie physique, Les principes" (Paris, 1903), and 

 "Les atomes" (Paris, 1913). 



II. At the College de France: MATIGNON, a physical 

 chemist whose researches have been especially in the 

 field of thermochemistry, and of the rare earths; JUNG- 

 FLEISCH, an organic chemist who has made important 

 investigations upon tartaric acid and certain derivatives 



