THE MYELIN BODIES. 395 



crystalline salts. On boiling with caustic alkalies it is decomposed 

 into trimethyl-amin and dimethyl-amin. It is not toxic. 



Jecorin is a substance of unknown composition, but apparently 

 contains both sulphur and phosphorus. It is not exclusively encoun- 

 tered in nerve-tissue, but has also been found in traces in the liver, in 

 the muscles, and, according to some observers, in the blood. It 

 reduces cupric oxide in alkaline solution on boiling, and on cool- 

 ing separates out in the form of a thick jelly. It is soluble in ether, 

 and can be precipitated from its solutions by alcohol. 



