ZOOLOGY AND BOTANY, MICROSCOPY, ETC, 
871 
the illumination can be made with the greatest ease during the examina- 
tion of the image. For preliminary obs3rvations the camera can be easily 
replaced by the eye-piece. 
Fig. 98. 
The latest form of the apparatus for the instantaneous photo- 
graphy of moving objects is shown in fig. 99. It consists of a camera 
mounted on two supports which slide on columns attached to the 
base of the apparatus. The camera is connected below with a Micro- 
scope of sjiccial construction, which enables the observer to examine 
