1 8 8 2 . ] Mineralogy. 6 i 1 



about 300 species announced as new, and also refers to many 

 mineralogical articles, quoting new analyses and new facts as to 

 physical characters and localities. The appendix is designed to 

 make Dana's Mineralogy (5th ed.) complete up to January, 1882, 

 and should be in the hands of every owner of that noble volume. 

 Orthite from Virginia.— F. P. Dunnington 1 and G. A. Koe- 

 nig 2 have described and analyzed orthite from Amelia county, Va. 

 It occurs in blade-like crystals several inches long, of a black 

 color and pitchy luster, sometimes enveloped by an altered mate- 

 rial. It has the following composition : 



Si0 2 A1 2 3 Fe 2 3 Ce 2 3 La 2 3 Di 2 3 FeO MnO CaO K 2 Na 2 



Analysis (1) is by Dunnington, (2) by Koenig. 



New analyses of Columbite and Monazite.— F. P. 

 ton 3 gives the following analyses of the columbite and r 

 Amelia county, Va. : 



Columbite. Hardness 5.5; spec. grav. 6.48; luster 

 ous; color dark-brown, streak light-brown, red wh< 

 splinters. 



Ta 2 3 Nh 2 5 Sn0 2 MnO 



FeO CaO MgO Y 2 3 (?) 



5.07- 1.27 .20 .82 = 100.2 





Ce 2 3 Di 2 3 La 2 Q 3 Y 2 3 

 16.30 24.4 10.3 I.I 



Fe 2 3 A1 2 3 Th0 2 P 2 5 SiO, 

 .9 .04 1S.6 24.04 2.7 = 



OS.: 



Obituary. — William S. Vaux, a well-known amateur mineralo- 

 gist, died at Philadelphia on May 5th, in his 71st year. As vice- 

 president of the Academy of Natural Sciences and of the Numis- 

 matic and Antiquarian Society, as president of the Zoological 

 Society and as treasurer of the American Association for the 

 Advancement of Science, he showed an active interest in the 



The chief object to which he devoted his ample means was the 

 collection of choice minerals, and as a result of extensive traveling 

 and constant collecting throughout a lifetime, he left one of the 

 nnest collections in this country. His cabinet was remarkable 

 'or the beauty of the individual specimens, in many cases unsur- 

 passed. He has bequeathed it to the Academy of Natural Sci- 

 ences of Philadelphia. 



; T pr ° c - A ' Ji'ioj. 



