654 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



The stage is of the square fixed type, and may be provided with a detach- 

 able mechanical stage. The curved limb allows of additional working 

 space on the stage and incidentally forms a convenient angle for lifting 

 the Microscope. -The fine-adjustment consists of the cam and worm 



Fig.- 123. 



screw continuous motion, originally introduced in the Leitz Continental 

 Microscopes, coarse-adjustment being by diagonal rack-and-pinion, and 

 draw-tube with milhmetre scale. This is also fitted with an English- 

 pattern mechanical stage, which forms an integral part of the instrument. 



