ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
655 
port consists of a plate which slides in a dove-tail slot in the table g , 
and is clamped by the screw l. Rising from i is the carrier m, to which 
are clamped the camera rails swinging upon a pivot supported by a 
block n which is adjustable vertically on the carrier m. The position of 
Fig. 159. 
m 
the camera may be changed from vertical to horizontal, or to any de- 
sired intermediate angle. The entire camera, in any position, may be 
adjusted to the height of the Microscope by raising or lowering the 
supporting block n n m. Beneath n is a second supporting block o, 
2x2 
