PRACTICAL HISTOLOGY [IV 



NOTES. 



In Abbe's drawing camera (latest modification) with moderating 

 glasses both for object and drawing paper, the light from the two 

 sources can be readily adjusted. 



Edinger's projection apparatus is very convenient for drawing the 

 outlines of sections of brain and spinal cord, with a magnification 

 of 10 to 30 diameters. 



