MICROSCOPIC PREPARATIONS OF THE NERVOUS SYSTEM. 



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



PHOTOMICROGRAPH XO. ^^ -y^'^<££K-*^ ^S^f-'i^^ . / 'Cc<C'<!^ 



/9i^a 



rRINTED IN INK BY THE ARTOTYPE PROCESS FROM NEGATIVES TAKEN BY THE AUTHOR. 



