858 SUMMARY OF CURRENT RESEARCHES RELATING TO 
Nachet Microscope.— The large model No. 2, represented in fig. 92, 
is very solidly built, and possesses all the requirements necessary for 
microscopic work of all kinds. It can be inclined to the horizontal. 
Fig. 92. 
The stage rotates about the optic axis, and carries the movable slide- 
holder. The coarse-adjustment is by rack and pinion, and the fine- by 
