NEW PUBLICATIONS 



WHICH MAY BE HAD ON APPLICATION. 

 (When writing please mention this Book.) 



New APLANATIC Condenser. N.A. 1.40. 



Polarisation Microscope with special heating and cooling appliances. 



Horizontal and Vertical Camera for Photo=Micrography and Photo- 

 graphing- larger objects. 



Apparatus for Projection of Experiments with Polarised Light. 



Apparatus for the Projection of Spectrum Experiments. 



Trichinoscope. 



Collective lens system of great light gathering power. 



New Microscope stand for investigations with transmitted and 

 incident light (Metallurgical). 



Dark Ground Condenser (ParaboloidaI\ especially adapted for in = 

 vestigation of the minutest living Bacteria. 



Projection Drawing Apparatus after Qreil. 



p A pi 7F IQQ LONDON HOUSE: 



^ ** ■"» L. ^ E I O O7 29, Margaret Street, 

 JENA. Regent Street, W, 





LEITZ'S 



NEW 



PETROLOGICAL 



STAND 



EMBODIES MANY 



IMPORTANT 

 IMPROVEMENTS. 



($ Illustrated Description on request. 



E. LEITZ, 



OXFORD HOUSE, 9-15 OXFORD STREET, 

 LONDON, W. 



Agents in all University Centres. 

 ( xiv ) 



