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 Fetude de la metallurgie," 

 (Paris, 1912), "Legons 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), an d "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; CHABREE, 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 



