PLATE 16 . 



Zeiss photomicrographic stand I 1 '. 



The barrel "T" is of greater diameter than in stand Ha. The fine adjustment Is at " W" and no 

 weight rests on it in lifting the instrument by the handle " H." The set screw " K " locks the upper 

 part of the instiument at any angle. The objective is set in place by means of a very convenient slide 

 carrier- The fine adjustment screw has an extremely slow movement ; and the vernier screws are on 

 the same axis (a great convenience). The stage rotates and may be locked at the desired place by 

 means of a set screw. For the substage arrangement see figure 120- 



