SCIENCE-ADVERTISEMENTS 



STUDENT MICROSCOPES 



We have written on this subject many years and as it continues to gain in importance so shall 

 we consider it our task to familiarize the instructors with the part which we assume in the equip- 

 ment of all science laboratories. 



To read our literature one cannot fail to observe that new ideas in microscope construction are 

 constantly coming in the new Leitz models introduced from year to year, and these same improve- 

 ments incorporated into microscope models of earlier design. 



Our claim to highest perfection in student microscopes is embodied in 



MODELS II L AND II S " LEITZ " 



which can be seen in use in the student laboratories of the leading universities. These models serve 

 their purpose indefinitely, not only temporarily as do so many of the models offered in competition. 

 Microscopes II L and II S need only an introduction in any laboratory, to lead to their being 

 adopted as a standard for quality, perfection and durability. 



At the time of this writing an order reaches us for one hundred and fifty of these same models, from 

 a state institution. This is by no means their initial order for Leitz microscopes. Furthermore, this 

 is not an exceptional instance, but cited at random, as convincing proof of prevailing opinion. 



Stand II L is not a recent model and therefore a familiar type found 

 in laboratories where a microscope is desired for considerable high 

 power work, where a fine adjustment of extreme sensitiveness and 

 slowest motion, combined with greatest durability, is required. 

 The Leitz Side Fine Adjustment, the " crowning feature of Lcitz Mi- 

 croscopes," more than fulfills these requirements. 



Stand 11 S is our latest model 

 and differs from II L only m the 

 fine adjustment. The Ball 8ear> 

 ing Fine Adjustment, of 

 which we are the original- 

 tors is of the same'degree of 

 careful mechanical^construc- 

 tion as in^the former adjust- 

 ment and equal in 

 durabiUty. Not being 

 so slow in motion, how- 

 ever, it becomes ideal 

 in connection ^ with [a 

 microscope for routine ; 

 and class work. fe , 



Remember : ^'- 



Stands II L and II S 



cost but httle^ ^°^^ 



than other microscopes 



and the investment will be more than repaid through a continual sat- 

 isfaction in their use. 



J 



Stand n L with Side Fme Adjustment by means 



of Worm Screw "Continuous 



Motion." 



Stand n S with Ball Bearing Fine 

 Adjustment on side 



UNITED STATES 

 BRANCH 



30 EAST 18th ST., 

 NEW YORK 



