BIOLOGY 

 LIBRARY 



Besides this catalogue the following' publications (in English, French, 

 or German) may be had gratis on application: 



Catalogue of Photo-microarajtltlc and Projection Apparatus. 



Prospectus relating to the ^Epidiascope. 



Catalogue of Photographic Objectives and Photo - optical 

 Auxiliary Appliances. 



Catalogue of Optical Measuring Instruments for Physical, 

 Chemical and Industrial Purposes (German and English only). 



Catalogue of Zciss Field-Glasses and Portable Stereo- Teles- 

 copes. 



Catalogue of ^Binocular and Monocular Stand Telescopes. 

 Prospectus relating to our Inter-ocular Distance Gauye. 

 Prospectus relating to our Stereoscopic Hanae-Finder. 



Catalogue of Astronomical Objectives and Astronomical In- 

 struments. 



