THE MICROSCOPICAL JOURNAL ADVERTISER. 



Zeiss Microscopes. 



m mi \m dpiidiil wirks in jena. 



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

 Cfltalogueof 1891 contains nil the latest improvements in MiCKOSConc and Photo-Micko- 

 OKAPHic Appakatus. AsAgiut I am enabled to import all their apparatus at the very 

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

 Carl Zeiss' Catalogue of Optical Measuring Instruments. 



Six new series of Photogra) hie Leases, cnlled the Zeiss Anastigmats (U. S. Patent 

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

 others is everywhere recognized in Europe. 



Catalogues forwarded on application. 



F. J. EMMERICH, Sr., Agent, 



74 Miirrai/ St., New York, N. Y. 



JOSEPH ZENTMAYER. 



209 South 11th Street, - PHILADELPHIA. 



Si^tologidkl >ii^i'o^docpe^, $65. 



STUDENTS' MICROSCOPES, $38 to $46, 

 COMPLETE. 



ILLUSTBATED CATALOGUE ON APPLICATION. 



Incorporated IS9.3. 



Spencer & Smith Optical Company, 



367-373 Seventh Strset, 

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



.MAXI'FAlTrUERS OF 



High-Grade Microscopes, Telescopes, and 

 Accessories. 



PROMPT ATTENTION GIVEN AI,I, ORDERS. 



Ssnd for our new catalogue, just out, giviuy full descriptious and price lists. 



