SCIENCE-ADVERTISEMENTS 



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lOl^ THE RBCORD VOAR OR |^|^ 

 IVI^ THE U. S. BRArVCH ^^^*^ 



It is with a great deal of pride and personal satisfaction that we are looking back 

 upon the year 1913. The new names of Institutions added to our ledgers are gratifying 

 indeed, and we herewith express our thanks for the confidence they have bestowed upon 

 us. The most reassuring fact, however, that we are on the right way of progress is the 

 evidence we are receiving, that quality is the foundation of our success : 



QUALITY OF MICROSCOPES and Lenses, as weU as QUALITY OF SERVICE. 



Dependable, reliable service is what we are striving to give. 



'Only one year ago we added a new wing to our works, accommodating four hundred 

 more mechanics. Now we' are building again. This is another sign of progress. 

 §> Incessantly striving to perfect our instruments, and always on the lookout for new 

 methods to help solve the intricate problems confronting the scientists, no year has 

 found us preparing to offer so many new things as the present. 



Binocular vision microscope for oil immersion objectives 



Diminutive microscopes for field work 



Ball bearing fine adjustment. A reUable principle applied for the first 



time to the microscope. 

 The Base Sledge Microtome, 1914. The microtome of the future 

 Blood Counting Apparatus: Thoma-Metz for differential blood counting 



without calcidation 

 New Epidiascope with Leitz Reflector, surpassing all in light power. 



The heat is reduced to a minimum. 

 New Metallurgical Microscopes 

 Johannsen's Mineralogical Microscope 



Simultaneous rotation of nicols and oculars in mineralogical microscopes 

 Berek's Mineralogical Demonstration Apparatus. 



The above and many more will help corroborate our statement that we are trying 

 to justify the confidence bestowed upon us. 



UNITED STATES / E.LEITZ \ 30 EAST 18th ST., 



BRANCH Ua#iX_^ r\) NEW YORK 



VWETzLAFy 



Factory: WETZLAR, GERMANY 



