WOOD, SPIVEY, AND EASTERFIELD : CHARAS. 539 XL.- Charas. The iiesin of Ihdiun Hemp. By T. BARLOW WOOD, M.A., W. T. NEWTON SPIVEY, M.A., and THOMAS HILL EASTERFIELD, M.A., Ph.D. SEVERAL preparations of Canwubis indica (syn. sativa), diffei-ing in physiological activity and in the manner of application to t,be human