316 RETINA, INNER EAR., NERVtiS. 



656. Structure of Medullated Nerve Other Methods. In order 

 to demonstrate the axis cylinder and the sheath of Schwann, 

 the myelin may be removed. This may be done by boiling in 

 caustic soda, and then neutralising ; by boiling in a mixture 

 of absolute alcohol and ether, and adding caustic soda ; by 

 boiling in glacial acetic acid ; by boiling in fuming nitric acid 

 and adding caustic potash ; or by treating with eau de Javelle. 



See also RANVIER, Traite, p. 718, et seq. REZZONICO, Arch, 

 per le Sri. M~ed., 1879, p. 237; TJZZONI, ibid., 1878, p. 4 (a pro- 

 cess of boiling in chloroform for an hour or two, then staining 

 and mounting in glycerin) ; BOVERI, Zeit. f. wiss. Mik., iv, 1, 

 1887, p. 91 ; JAKIMOVITCH, Journ. $e I'Anat., xxiii, 1888, p. 

 142, or Zeit. f. wiss. Mik., v, 4, 1888, p. 526 (instructions for 

 impregnating the axis cylinder with silver, followed by reduc- 

 tion in formic acid and amyl alcohol). 



