THK MICROSCOPICAI, ADVERTISER. 



Zeiss Microscopes. 



THE CJIfIL ^EISS OPTICAL WOiS IN JENA. 



These works have no rival in the manufacture of stands and objectives. Their new 

 Ca€blogue of 1891 contains all the latest improvements in Microscopic and Photo-Mioko- 

 GEAPHio Apparatus. As Agent I am enabled to import all their apparatus at the very 

 lowest rates. Orders for Colleges and Institntions filled promptly, duty free. Just out : 

 Carl Zeiss' Catalogue of Optical Measuring Instruments. 



Six new series of Photographic Lenses, called the Zeiss Anastigmats (U. S. Patent 

 No. 435,271;, are the newest production of the Curl Zeiss firm. Their superiority over all 

 others is everywhere recognized in Europe. 



Catalogues forwarded on application. 



F. J. EMMERICH, Sr., Agent, 



74 Murray St., New York, N. Y. 



JOSEPH ZENTMAYE 



m. 



209 South 11th Street, - PHILADELPHIA, 



STUDENTS' MICROSCOPES, $38 to $46, 

 COMPLETE. 



ILLUSTRATED CATALOGUE ON APrLIC/VTION. 



Incorporated 1893. 



Spencer & Smith Optical Company, 



367-373 Seventh Street, 

 Buffalo, N. Y., U. S. A. 



]«ANrFA<'ri7Ri:R.S OF 



High-Grade Microscopes, Telescopes, and 

 Accessories. 



PROMPT ATTENTION GIVEN A1.I, ORDERS. 



Send for our new catalogue, just out, giving full descriptions and price lista^ 



