Ixxxviii GENERAL SUMMARY OF SCIENTIFIC AND 



Pelhamine. A variety of serpentine of uncertain character. Pei- 

 ham, Mass. 



PhilUinte. A hydrous sulphate of copper and iron. Occurs in 

 small masses of a deep-blue color in a clay. Province of Santiago, 

 Chili. 



Pilinite. A hydrous silicate of aluminum and calcium ; allied to 

 the zeolites. Found in fine, white, flexible needles, having a silky 

 lustre, in the granite of Striegau, Silesia. 



Psittacinite. A hydrous vanadate of lead and copper, nearly allied 

 to mottramite. (See above.) Occurs in thin, crypto-crystalline coat- 

 ings of a green color. Silver Star District, Montana. Described by 

 Dr. Genth. 



Pyroconite. Identical with pachnolite. Greenland. 



Itoscoelite.A. vanadate of aluminum and potassium, described by 

 Professor Roscoe, and also by Dr. Genth, with difierent results. Oc- 

 curs in scales grouped in stellate or fan-shaped groups; the color 

 greenish gray. Found in small seams in a gold-mine at Granite 

 Creek, El Dorado County, California. Named by the discoverer. Dr. 

 James Blake, for Professor Roscoe. 



Schravjite. A new fossil resin, of a hyacinth-red color ; from Bu- 

 kowina. 



Siderazot. Nitride of iron ; found at the volcano of Etna. 



Vanuxemite. Supposed to be a hydrous silicate of aluminum and 

 zinc. From Sterling Hill, NT. J. 



Wertliemamte. A subsulphate of aluminum, difi'ering from alumi- 

 nite in containing less water. Found near the city of Chachapoyas, 

 Peru. 



