BOOKS. 



Arcana Entomologica, or Illustrations of New, Rare and Interesting 

 Insects. By J. 0. Westwood, 2 vols., 95 beautifully colored plates. Price, 

 J17.50. 



American Journal of Science and Arts. Complete set of 145 vol- 

 umes bound, for sale at $250. Published at $410. unbound. 



The widow of one of the leading state geologists of the country wishes ta 

 dispose of this set at once and hence has fixed upon this exceedingly low 

 price. I have sold a number of sets unbound for $275 and on the rare occa- 

 sions when it occurs on foreign catalogues sets are usually held at from $300 

 to $400. 



Those who see this advertisement need not be told that it forms the best 

 record of the scientific progress of this country. It is indispensable to every 

 Geologist, Botanist, Zoologist, Mineralogist, Astronomer or Naturalist. In 

 short this is a great opportunity for any Agricultural College, Agricultural 

 Experiment Station, School of Mines, University or General Library. Many 

 of the volumes are now excessively rare. 



Pathologie and Therapie, by H. v. Ziemssen, on various diseases. 30 

 vols. h. mor. Published at about $125, unbound. Our price, $30. 



Send for our booh catalogues specifying what subject you are 

 interested in. 



MINERALS. 



NEW ARRIVALS. In addition to the many choice things brought by 

 Dr. Foote from Canada and the Lake Superior region we have an increased 

 number of shipments from our foreign and home correspondents. 



Canada. Apatite, several fine groups and large single crystals, $3.50 

 to 810.00. Twin Titanites, Scapolites, Hornblendes and Pyroxenes. 



Michigan. Crystallized Coppers, Silver with Copper, 25c. to $2.50. 

 Copper in Calcite, very fine Manganite on Gothite, $1.50 to $7.50. Groups 

 op Prochlorite after Garnet. 



Massachusetts. GRAY EPIDOTE, new variety (determined by 

 Penfield) in groups of bright crystals with color of Zoisite and form common 

 to Epidote, rarely twinned. Some of the smaller crystals translucent. 

 Cabinet specimens, 75c. to $3.50. Spodumene in terminated crystals, $1.00 

 to $2.50. Rhodonite, fine color, and Cummingtonite, 25c. to $1.00. 



Sardinia. A new and remarkable lot of Phosgenites and Anglesites, 

 some of the former rivalling any in America for size, clearness and lustre, 

 $2.50 to $15.00. One very large Phosgenite crystal, $30.00. Smaller groups 

 in stock. 



Sicily. A few thin tabular crystals of Sulphur and several groups, $2.00 

 to 85.00, also fine polished Ambers ; Semelite, Herschelite and fine blue 

 Halite. 



Also Calif. Chiastolites (better than Mass.), polished to show structure. 

 Vesuvianite, a very large double crystal ; S. Dak. Columbite cryst. ; beauti- 

 ful Mexican Onyx, Pachnolite after Cryolite (new and rare), etc., etc. 



Any of the above will be sent on approved. 



Systematic Collections for Schools and Colleges. Series illus- 

 trating Physical Characteristics of Minerals. Special Collections 

 prepared. 



J±. E. FOOTE, 



1224-26-28 North Forty-first Street, Corner of Viola, Philadel- 

 phia, Pa. U. S. A. 



