1897.] NATURAL SCIENCES OF PHILADELPHIA. 289 



in 1877 Professor of Geology. Since 1885 he has been the Director 

 of the Geological Survey of Russia, and since 1886 a member of 

 the Imperial Academy of Sciences at St. Petersburg. In addition 

 he is an honorary member of the Societies of Naturalists of St. 

 Petersburg, Moscow, Kiev, Kazan and Ekaterinburg ; of the 

 Mineralogical Society of St. Petersburg ; of the Geological Society 

 of Belgium and of the Belgian Society of Geology, Paleontology 

 and Hydrology. 



The official list of his more important contributions to science 

 comprises fifty-three published by the Russian Government, in the 

 Journal des Mines, and in the journals the Mineralogischer Gesell- 

 schaft, Societe Ouralienne, the Academie des Sciences, etc. 



Mr. Sager Chadwick was elected a member. 

 The following were ordered to be printed : — 



