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iMICROSCOPIC PREPARATIONS OF THE NERWUS SYSTEM. 



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



PHOTOMICROGRAPH NO. "Z^^. Al^.t,TU^c^irz.<J— '/^ -^ /irf^. 



PRINTED JN INK BV THE ARTOTVPE PROCESS FROM NECA TIVES TAKEN BV THE AUTHOR. 



