THE MICROSCOPICAL JOURNAI, ADVERTISER. 



Zeiss Microscopes. 



THE CARL ^[ISS OPTICAL WI^KS IN JENA. 



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

 Catalogue of 1891 contains all the latest improvements in Miceoscopic and Photo-Micko- 

 GEAPHic Apparatus. As Agent I am enabled to import all their apparatus at the verv 

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

 Carl Zeiss' Catalogue of Optical Measuring Instruments. 



Six new series of Photographic Lenses, culled the Zeiss Anastigmats (U. S. Paten' 

 No. 43.5,271 j, are the newest production of the Carl Zeiss firm. Their superiority over a' 

 others is everywhere recognized in Europe. 



Catalogues forwarded on application. 



F. J. EMMERICH, Sr., Agent, 



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



JOSEPH ZENTMAYER. 



209 South 11th Street, - PHILADELPHIA, 



Si^tologidkl >iidi^o^co.pe^, $65. 



STUDENTS' MICROSCOPES, $38 to $46, 

 COMPLETE. 



ILLUSTRATED CATALOGUE ON APPLICATION. 



Iiic<tr|> orHtff»l 189a . 



Spencer & Smith Optical Company, 



367-373 Seventh Street, 

 Biaffalo, N. Y., U. S. A. 



MANrFAOTlJKERS OF 



High-Grade Microscopes, Telescopes, and 

 Accessories. 



PROMPT ATTENTION GIVEN AI,Iv ORDERS. 



Sand for our uew citlulogue, just out, giving full descriptions and price lists. 



