ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



513 



either side of the limb and actuate a lever giving a very smooth and 

 delicate movement. 



In Stand No. 1 (rig. 73) the body and limb are mounted on a stage 

 below the trunnions, and the instrument will be found very steady when 



Fig. 75. 



placed in the horizontal position. The mechanical stage, which is built 

 on the Microscope and is very rigid, has a range of 25 mm. in a vertical 

 and 60 mm. in a horizontal direction, both graduated to h mm. The 

 mechanism of the latter movement can, if desired, be removed, leaving 



Aug. 18th, 1909 2 M 



