712 SCIENTIFIC RECORD FOR 188D. 



Websky, M. Ueber die Ein- und Mebideutigkeit der Fundamental -Bcigeu-Com- 

 plexe fiir die Elemeute mouokliuischer Krystall-Gatlungeu. Jabrb. Min., i, 79. 



WULFF, L. Waclisen der Krystalle nur durcli Juxtaj)Osition neiier Molekeln. Zs. Kr., 

 X, 374. 

 Krystallisatiou in Bewegung. Zs. Kr., xi, 120. 



Wyrouboff, G. Quelques considerations sur I'isomerie et le polymorpMsme. Bull, 

 Soc. Min., VIII, 398. 



NECROLOGY OF MINERALOGISTS : 1885. 



E. E. SCHMID. — Born May 22, 1815, at Hildburgbausen ; died at Jena February, 1885; 

 for many year« professor at Jena. His work was largely in geology, but be made 

 many contributions to mineralogy, cbiefly of a cbemical nature. 



Benjamin Silliman. — Born December 4, 1816; died January 14, 1885; professor of 

 cbeuiistry in Yale College, New Haven, Conn. He was an editor of tbo American 

 Journal of Science for nearly fifty years ; autbor of works on cbemistry and i)bysics 

 and of many papers upon American minerals, especially the minerals of tbe Wtst- 

 ern States and Territories 



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