406 CHAPTEIt XXXII. 



Zeit. ids*. Mik. } xix, 1903, p. 508) sections stained with 

 Saurefuchsin and differentiated by the method of PAL. 



GKDOELST (La Cellule, v, 1889, p. 136) has the following: 

 (a) A nerve is treated with liquid of PEKENYJ, 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. (b) 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. 



