726 Chestnut St., Philadelphia, Pa. 
DESIGNERS, 
ILLUSTRATORS, 
AND ENGRAVERS. 
Reproductions of Pen Drawings, 
Wood-cut or Steel Prints, 
Lithographs, &c. 
Engravings in Halftone 
(SEE FRONTISPIECE.) 
Etched on hard copper, type-high and 
ready for the printing press. 
This work is gradually growing in favor with scientists and 
geologists. For faithful aud accurate photographic repre¬ 
sentation of objects, such as meteorites and gems, 
IT HAS NO EQUAL. 
We shall be glad to furnish information, specimens and prices 
on application. 
Correspondents will oblige us by giving a clear and exact state¬ 
ment of just what they wish engraved. 
ELECTRO TINT ENGRAVING CO., 
726 Chestnut St., Philadelphia, Pa. 
