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MICROSCOPIC PREPARATIONS OF THE NERVOUS SYSTEM. 



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



PHOTOMICROGRAPH NO. ^"7 cyL^c££ct^ /St.'i'^ . 3j /3^ / S^S^ . . 



PRINTED IN INK BY THE ARTOTVPE PROCESS FROM NEGATIVES TAKEN BV THE AUTHOR. 



