THE PHOTO-MICBOGBAPHIC CAMEKA 137 



Combined Vertical and Horizontal Cameras. Various types 

 of camera have been 

 devised embodying the 

 two designs vertical and 

 horizontal, and arranged 

 so that the camera may 

 be used in conjunction 

 with the microscope in 

 either position. None 

 of them can be said to 

 be entirely satisfactory, 

 except one which has 

 been recently brought 

 out by Messrs. Zeiss. 

 In this new apparatus 

 an efficient arrangement 

 is made for overcoming 

 the great objection to all 

 vertical cameras which 

 are supported on a single 

 metal bar. This is 

 effected by attaching 

 struts to the supporting- 

 rod so that it has no 

 freedom to vibrate. The 

 accompanying illustra- 

 tions (Figs. 50 and 51) 

 show this. 



The microscope and 

 camera are supported 

 on one single solid base, 

 and the arrangement is 

 such that with ordinary 

 care the act of removing 

 the shutter in the dark- 

 slide of the camera 

 should not result in any 

 displacement of the 

 various components. 

 The base consists of a heavy cast-iron plate separated into two 



