ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



127 



of slides may be used, and any degree of obliquity obtained without dis- 

 turbing the illuminator. 



Whelpley, H. M. — [Illumination.] 



The Microscope, VIII. (1888) p. 351. 



(4) Photomicrography. 



Kibbler's Photomicrographic Camera. — This (fig. 20) was devised 

 by Dr. A. Kibbler and carried out in detail by Mr. W. Bailey. It is 

 thus described by the designer. 



" The stand consists of a base and an upright, the latter being pierced 

 for the object-glass. At the back of the upright is a shutter for making 

 the exposure and a hood to connect this part of the apparatus with a 

 camera. The connection can ba made to any size camera by a simple 

 tube made either of wood or metal and of a length to please the 

 operator. From the lower part of the upright is a rod (firmly supported 

 at the further end by the base) upon which travels the stage with its 

 clamp and screw. The sliding movement of the stago upon the rod 

 serves for a rough adjustment. The fine-adjustment is at the end of the 

 rod and is controlled by a long arm working at the side and connected 



Fig. 20. 



by a cord. In order that the tension of the cord may be constantly 

 maintained one end of the long arm is made to travel outwards by a 

 tangent screw, the other end working in a ball-and-socket joint to com- 

 pensate for this lateral movement. At the upper part of the upright is 

 a V-shaped rod upon which the stage also runs. The upper rod tends 

 materially to steady the movements of the stage and is also furnished 

 with a screw which can be used for clamping the position of the stage, 

 after the focusing is accomplished by the fine-adjustment, so that no 

 movement can occur during the process of changing the sensitized plates 

 or exposing. The lower rod which supports the stage and the upper 



