THE MICROSCOPICAL JOURNAL ADVERTISER. 



Zeiss Microscopes. 



THE ciifiL urn mm mm in jenh. 



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

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

 GRAPHic Apparatus. As Ag. ut 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 Mkasuring Instruments. 



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

 No. 435. 271 J, 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, 



7^ 3Jnrray St., New York, N. Y. 



JOSEPH ZEMTMAYER 



209 South 11th Street, - PHILADELPHIA. 



fti^tologi<fhl >'lici'o0dofe0, $65. 



STUDENTS' MICROSCOPES, $38 to $46, 

 COMPLETE. 



ILLUSTRATED CATALOGUE ON APrLICATION. 



IncorporBtecl 189a. 



Spencer & Smith Optical Company. 



367-373 Seventh Street, 

 Buiffalo, N. Y., U. S. A. 



MAXrFAtTUKERS OF 



High-Grade Microscopes, Telescopes, and 

 Accessories. 



PROMPT ATTENTION GIVEN ALI/ ORDERS. 



Send for our new catalogue, just out, gtviug full descriptions and price lists. 



