BOOKS. 



Mention of extra rare and valuable. 



Brackenridge, W. D. — Filices of U. S. Exploring Expedition. Text 



and folio atlas of 46 plates $50.00 



Unger, F. — Chloris Protogsea. Beitrage znr Flora der Vorwelt. 50 



colored plates, folio. 1847 . 12.50 



Gray, Asa.— Genera of Plants of U. S. 2 vols. 186 plates. 1848 10.00 



Percival, J. G. — Geology of Connecticut, 1842. Very fine copy 6.00 



Rafinesque, C. S— Medical Flora of U. S. 2 vols. 1828 5.00 



Stoddard, A. — Sketches of Louisiana. Giving mineral riches of La., 



Ark., etc. 1812 5.00 



OUR BOOK STOCK EMBRACES EVERY DEPARTMENT OF SCIENCE 

 AND MEDICINE. 



Catalogues Free. (Please mention subject you are interested in). 



MINERALS. 



RECENT ADDITIONS. 



From Copper Queen. Dr. Foote sends us in eleven boxes, the pick of a 

 quantity of material saved during the past year at Clifton. 



Azurite in groups of large, bright crystals, the finest type for cabinet specimens 

 we have ever seen. Also in delicate " wheat sheaf" forms scattered over a black 

 gangue, both varieties having fine lustre and rich color. A few balls of crystals of 

 the Chessy variety. 



Chalcotrichite, a magnificent lot of this beautiful capillary cuprite. The speci- 

 mens, showing opened cavities filled with bits of exquisite color and brilliant crys- 

 tallization, are second to none among showy minerals, prices from 25 cents to 

 $3.50. Also the regular cubes and cubo-octahedrons with crystallized copper. 

 One group of one-half inch crystals, $25.00. 



Colemanite. A large lot, representing the work of many months on the part 

 of our collector, just received. It embraces some groups and single crystals of 

 remarkable perfection and brilliancy, offering to museums or collectors an oppor- 

 tunity for selection seldom seen. There are among them many first class groups, 

 all beautiful, with prices much lowered. 



Cryolite xls. one and one-quarter inch diameter. "We have been fortunate 

 in securing two remarkable groups, one composed of crystals, well formed and of 

 phenomenal size, $30.00. We believe that these two excel anything in America. 

 Other rarities in the lot are Epistilbite, Eudyalite, Thomsenolite, all collected 

 in '76. 



Hungarian Laumontite in groups of white crystals, making handsome and 

 most attractive specimens, 50 cents to $7.50. 



Cumberland Minerals : — A large shipment contains a great variety of beauti 

 ful specimens, among them : 



"Butterfly" Twins. From gemmy little specimens of half an inch up to four 

 inches. Perfect xls. 25c. to $10.00. Also groups of clear Calcite crystals. 



Hematites with brilliant Smoky Quartz ; Lined Fluors, yellow, blue, green and 

 purple; Barites ; Calcite delicately sprinkled with iridescent Pyrite and others at 

 the usual prices of North England minerals. 



THE LARGEST AND MOST COMPLETE STOCK OF MINERALS 

 IN THE WORLD. 



Illustrated Catalogue and prices on application. 



Dr. J±. E. FOOTE, 



1224-26-28 N. Forty-first St., Cor. Viola, Philadelphia, 

 Pa., TS. S. A. 



