37 



47' PsEUDOMORPHS after Halite, single and interpenetrating 

 crystals of common salt, replaced by calcite ; on the road 

 to Easontan, Jamaica, West Indies. Collected by F. C. 

 Nicholas. 



48. Martite, altered magnetite crystals; still further changed 



superficially, to limonite. Chihuahua, Mexico. Nos. 

 47 and 48 are exhibited by L. P. Gratacap, for the Am. 

 Mus. Nat. Hist. 



Note. — Among recent additions to the gem-cabinet 

 of the American Museum of Natural History are a re- 

 markable specimen of green tourmaline, cut, from Paris, 

 Maine ; and of fire-opal from Queretaro, Mexico ; also 

 very large crystals of rhodocrosite (carbonate of man- 

 ganese) from Park County, Colorado, and a suite of 

 twenty tourmaline crystals from Haddam, Connecticut, 

 with associated quartz and albite. These may be seen in 

 the Morgan collection of gems in the Mineralogical 

 Hall. 



49. Sapphire, series of crystals, from Yogo Gulch, Fergus 



County, Montana, together with a series of drawings of 

 crystals. 



50. Prosopite from near Park City, Utah. 



51. Meteoric Iron from Rosario, Department of Olancho, 



Honduras, Central America. 



Nos. 49, 50 and 51 are exhibited by George F. Kunz. 



52. Pseudomorphs, Quartz after Wollastonite, Diana, Lewis 



County, N. Y. 



53. Pseudomorphs, Qiiartz after Pyroxene, Pierrepont, St. 



Lawrence County, N. Y. 



54. Pseudomorphs, Talc after Qiiartz, Gouverneur, St. Law- 



rence County, N. Y. 



55. Pseudomorphs, Mica after Scapolite, Gouverneur, St. 



Lawrence County, N. Y. 



Nos. 52, 53, 54, 55 are exhibited by Professor C. H. 

 Smyth, Jr., Hamilton College, Clinton, N. Y. 



