8o Mineralogy — By Eyichange 



J. F. HEMENWAY, New York City. 



Octahedral Sphalerite, "Lucky Inn" Mine, Slocan District, near 

 Raslo, B.C. 

 CHARLES HOFFSTETTER, Jersey City, N. J. 



I Specimen of Septaria; limonite sheathing on crust, Elk Prairie 

 Jefferson Co., 111. 

 ROBERT A. A. JOHNSTON, for Canadian Geological Survey. 



I Specimen of Baddeckite from Baddeck, N. S. 

 A. L. LACK, New York City. 



Tourmaline from iSist Street and Lafayette Avenue, New York 

 City. 

 A. H. PETEREIT, New York City. 



I Specimen of Calcio-Volborthite from Telluride, Col. 

 DAVID PROSKEY, Nevada. 



600 Minute crystals of Gold from ore at Rawhide, Nev. 

 T. SAUNDERS, New York City. 



I Specimen of Coccolite (pyroxene), Weaverstown, Warren Co. 

 N. Y. 

 R. B. SPENCE, Elmira, N. Y. 



3 Specimens of crystallized Silver in reticulated octahedrons from 

 Nipissing, Ontario, Canada. 

 Mrs. JAMES SULLIVAN, New York City. 



Specimens of various minerals, including Aragonite, Calcite, Natro 

 lite. 

 OLIVER TIMS, New York City. 



I Specimen of Tourmaline-bearing Rock, Maine. 

 I Specimen of Slate, Greenwood Lake, N. J. 

 BERNARD ZIGRELIUS, New York City. 



30 Fragments of Agate, 7 specimens of Copper, 2 specimens of 

 Chlorastrolite, 2 specimens of Thomsonite, from Lake Superior 

 Michigan. 

 Limestone holding Galena from Isle Royale, Lake Superior. 



By Exchange 



ROBERT B. GAGE, New Jersey State Survey. 



I Specimen of Emplectite from Cobalt, Ontario, Canada. 

 3 Specimens of Hydrocuprite from Somerville, N. J. 



ALFRED C. HAWKINS, Sewaren, N. J. 



I Specimen of Chrysoberyl from I22d Street and Morningside Park 

 New York City. 

 H. S. PECK, Albany, N. Y. 



1 Specimen of Barite (with Psilomelane) from McCormick, S. C. 



I Specimen of Psilomelane from McCormick, S. C. 



I Specimen of Psilomelane (replacing Asbestos) from McCormick, S.C. 



I Specimen of Siderite (with Barite) from Frostburg, Md. 



