THE FIFTEEN. 297 



LOUYET. Young Chemist -at Paris, FRANCE ; died from 

 the poisonous effect of fluorine, while determining its atomic 

 weight, 1849. 



FLUORINE, 242-243. 



SCHNEIDER, ERNST ROBERT. Born March 20, 1825. 

 Professor extraordinarius of Chemistry, University of Berlin. 

 The last one, at Berlin, GERMANY, faithful to Berzelian 

 traditions; hence his great success in atomic weight deter- 

 mination. 



ANTIMONY, 265-266. BISMUTH, 237. WOLFRAM, 



273-276. 



ROSCOE, SIR HENRY (ENFIELD). Born January 7, 1833, 

 at London, ENGLAND. Professor of Chemistry, Owen's 

 College, Manchester (1857-1887); Vice-Chancellor of the 

 University of London (1896). 



VANADIUM, 273. Also : C, 102, 104. Wo, 274-275. 

 WINKLER, CLEMENS ALEXANDER. Born December 26, 

 1838, at Freiburg, Saxony, GERMANY. Professor of Chem- 

 istry at the Bergakademie at Freiburg, since 1873. 

 INDIUM, 250. 



NILSON, LARS FREDERIK. Born May 27, 1840, at Skon- 

 berga, Soderkoping, SWEDEN. Professor of Chemistry, 

 Upsala University. 



BERYLLIUM, 237. 



THORPE, THOMAS EDWARD. Born December 8, 1845, at 

 Manchester, ENGLAND. Professor of Chemistry, Royal 

 College of Science, London (1885); now Director of 

 Government Laboratories, London. 



SILICON, 267. Also :Au, 234. Br, 238. Ti, 270-271. 52. 

 PETTERSSON, SVEN OTTO. Born February 12, 1848, at 

 Gothaborg, SWEDEN. Professor of Chemistry at the Uni- 

 versity (Hogskola) of Stockholm. 



SELENIUM, 269. Also : Be, 237. 



SMITH, EDGAR F. Born May 23, 1854, at York, in 

 Pennsylvania, UNITED STATES. Professor of Chemlstrv, 

 University of Pennsylvania, at Philadelphia (since 1881). 



ARSENIC, 226-231. Also :Cd, 239. Mo, 260. Pd, 263. 

 Sb, 265-6. Wo, 274-6. 30. 



