ADVERTISEMENTS. ix 
MINERALS, NEW ARRIVALS. | 
Topaz from Mess as Mt., Millard Co., Utah. Remarkably brilliant perfect crystals, some 
doubly term bod and r rarely an inch long. Both the yellow and colorless crystals are 
perfectly t'idfere nt and more beautiful than the Mexican. Crystals 5c. to $1.00. Matrix 
Specimens, 50c. to $6.00. 
Martite from Twin Peaks, Millard Co., Utah. Fine onpe showing Pho eris and octahedral- 
dodecahedral crystals from one-fourth to two inches in diameter. The tals are perfectly 
formed, exhibit sharp angles and polished faces ka with the ET Pyroxene form 
ius attractive specimens. Groups 25c. th 5.00. 
Boxes have been dips pst our last announcement from Italy, voee d — 
Germany, Canada, Lake Superior and man ny parts of the United States, so that choice specimens 
i Garnierite, Blue Corundum, rende nite, s And site, Eudidymite, Enstatite, poris one Ged the 
many rare species mentioned in previous lists can still be furni shed. The Sulphurs, Hematites, 
Selenites, Pyrites and Rubellites are the most beautiful minerals ever seen and exceedingly low 
in price. 
RARE AND VALUABLE BOOKS. 
mar nati o. 8., M "ior eqeotouie, atk quarto, D pp. 41 plates, many colored figures. 
xtra rare, foreign price, $52.50; price $30.0 
dhar Dictionary of Solubilities. "Extra rare, $17.60. 
Murchison’s Silurian Sys nd rare, $20.00. 
Fin 
Trelease and Gray, Engleman’ s Botanie al Works. 4to, 92 plates, rare, $10.00. 
Hooker, Flora Boreali-Americana. 2 vols., 4to. Usual price, $62.50 ; my price, $20.00. 
oO 
Birds from Pacitic R. R. n des PP ., 88 colored pem cloth $5.50. 
Botany from P. R. R. 462 pp., 138 p a f r Sen .00. 
Geology from P. R. R. 805. Dru: = plates, .» $3.0 
Mammals from P. R. R. 944 pp., 60 plates “317 ys ls v 00. 
SEND FOR OUR CATALOGUES. 
Pr A: RE. FOOTE, 
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394 
JOHN J. HORN ESTABLISHED 1842. 
WM. H. HORN & BRO, 
MANUFACTURERS OF 
HORN’S STANDARD 
HARD RUBBER, LEATHER COVERED AND ELASTIC 
TRUSSES -~ 
Abdominal Supporters, Shoulder Braces, Suspensories, Elastic 
Hosiery, Crutches, Pile Pipes, Ete. 
Nos. 451, 453 and 455 North Third St, 
PHILADELPHIA, U. S. A. 
