MICROSCOPIC PREPARATIONS OF THE NERVOUS SYSTEM. 



BY JOHN J. MASON, M. D., NEWPORT, R. I. 



PHOTO-MICROGRAPH XO. Miy <^6/{SC^.r' yS-r-tM^ yz,c^ /S^S-O 



rRL\TED IN INK BY THE ARTOTYPE PROCESS FROM NEGA TIVES TAKEN BY THE AUTHOR. 



