1V6 



THE AMERICAN MONTHLY 



[June, 



to very thorough pressure, so tliat the bundles are flatten- 

 ed out. These flattened out bundles are now readily 

 split up further without their fibres being disarranged. 

 This manipulation I have leai'ned from Beale's — "How to 

 Work with the Microscope." 



It is not to be expected that on a subject which has 

 been investigated for years by the ablest men, much new 

 matter could be said; and my principal object in writing 

 this paper is to enable such as — like myself — have neither 



FKiURE 1. 



the skill nor the time to obtain good results with the 

 gold method, to demonstrate to themselves the very 

 interesting histological facts under consideration. The 

 copies of specimens which are being sent around are to 

 demonstrate that this method brings out all the gold 

 method does. Nevertheless, I have prepared three dia- 

 gramatic figures, for the purpose of calling attention to 

 certain points which are of scientific interest. 



Figure 1 shows a nerve termination. If we follow the 

 nerve we see that at (d), where the medullary sheath ends, 

 it grows very thin and then splits up into two branches. 

 At {A) we see what the books describe. The sheath of 



