HARTNACK MICROSCOPES. 
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THE HARTNACK MICROSCOPES AND OBJECTIVES 
Acknowledged by the most eminent experts as the best in- 
struments in the world for 
HISTOLOGICAL, BOTANICAL, AND OTHER 
SCIENTIFIC RESEARCH. 
Recommended by the Professors of Harvard Univer- 
sity, and used in every Department. 
Arrangements have 
been made by which 
these Microscopes, with 
their Objectives, can 
now be placed upon the 
American market in com- 
petition with other manu- 
factures. As 
s 
oe 
Ss S\ 
SOLE AGENTS 
we guarantee them to be 
as represented. 
= Hn) MARICHAL 
alll =< WL HH ae 
il AN Sumy. 2= Prices trom $20 to $300, 
ee = = lil ce 
Stand No. VII. 
Selling Agents for Chance’s Slides and Cover Glasses, 
and Markoe’s Mounting Materials. 
IMPORTERS AND MANUFACTURERS OF 
MICROSCOPISTS’ SUPPLIES, | EDUCATIONAL SUPPLIES, 
CHEMICAL AND PHILOSOPHICAL APPARATUS. 
Correspondence solicited. Catalogues on application. 
GEO. A. SMITH AND COMPANY, 
No. 7 Park Street; Boston: 
