406 ClIAPTEIi xxxfi. 



Zeit. iciss. M-lk., xix, 1903, p. 508)— sections stnined with 

 Saurefuclisin and differentiated by ihe method of Pal. 



Gedoelst {La Cellule, v, ]889, p. ]36) has the following: 

 (a) A nerve is treated with liquid of Pekenyi, either pure or 

 with addition of a trace of osmic acid, and examined in 

 glycerin. By this treatment the myelin loses its excessive 

 refractivity and the network comes out clearly. {h) Silver 

 nitrate. Good images, but uncertain, (r) Treatment with a 

 mixture of osmic acid of 1 per cent, and absolute alcohol. 

 The network comes out black. 



