The Bausch & Lomb BH Microscope 



has been designed especially for use in schools and 

 colleges and in it we have aimed to produce a very 

 rigid, durable instrument at a moderate price. 



It is of the handle arm type and hence possesses 

 the great advantage of enabling it to be carried with- 

 out injury to the fine adjustment, a point of much im- 

 portance in laboratory work where instruments are 

 continually handled by students. 



The fine adjustment is unusually responsive. The 



working parts are thoroughly protected from dust. 



BH 2, with § and i objectives, 1 -inch eye- 

 piece, double nose-piece . . . $33.50 



BH4, with f and i objectives, 2-inch and 



1 -inch eye-piece, double nose-piece . 35.00 



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Bausch & Lomb Optical Company 



Carl Zeiss, Jena 



Offices: 

 New York 

 Boston 



Chicago M/ Frankfort o/M 



Rochester, N. Y. 



