PIRSSONITE. 



A new and rare mineral from Borax Lake, California. Tliis interesting^ 

 species is fully described by Mr. J, H. Pratt in this number of the American 

 Journal of Science. 



We were so fortunate as to secure all purchasable specimens and 6ffer small 

 but perfect crystals at 40c to $2.50 each. Several of largest size and rarest 

 form at higher prices. (One crystal associated with Northupite.) 



RARE AUSTRALIAN MINERALS. 



Seldom seen in American Collections. 



They have sold rapidly, and collectors desiring them will do well to order 

 at once. 



The following are among the most interesting and novel ones left : 

 NEWBERYITE in aggregations of crystals, . . . 50c. to $1.00 



PHACOLITE, splendid twin crystals of this beautiful 



Zeolite on gangue $1.00 to $3.00 



BROMYRITE, crystallized, $1.00 to $6.00 



GMELINITE. The finest examples we have ever seen. 



One each at $1.50 and $2.50 



CER-USSITE, some good small ones left, . . . 50c. to $1.00 



PYROMORPHITE for the microscope in minute crys- 

 tals of modified form and great brilliancy, . . . Mounts, 50c. each 



FROM PATERSON, K J. 



A collection made some time ago gives us some good specimens which are 

 offered at low prices, 25c. to $1.00 each. Thaumasite- crystals, Pectolite 

 in large balls of radiated structure, Prehnite, Apophyllite and Heulan- 

 dite. 



> TERMINATED CRYSTALS OF PECTOLITE. 



A choice lot from Guttenburg, N. J. 



Loose aggregations of iridescent and almost snow white prisms associated 

 with bright Prehnite. Handsome and desirable specimens, 75c. to $1.00. 



MINERALS SENT^ ON APPROVAL to responsible parties in any. 

 part of the world, by freight, express, or post. (We deliver them to you free 

 of charge with privilege of selection and return.) 



Catalogue and circulars on application. 



SCIENTIFIC BOOKS. 



One of the largest stocks in America. 

 Catalogues just out on subjects of 

 Geology, Mineralogy, 



Paleontology, , Crystallography, 



Geological Surveys, Lithology, 



If you are looking for books it will pay you to send for our lists, 

 mention subject.) 



Meteorites, 

 Mining, 



Metallurgy* 



(Please 



Dr. A. E. FOOTE, 



Warren M. Foote, Manager. 



lSB4r-2e-28 ISTortli IT'orty-ir'irst Street, 

 PHILADELPHIA, PA., U. S. A. 



