Where are the pathogeneses of this drug to be found ? In Allen's Encyclopaedia . What is this drug ? It is the Hashish or Indian Hemp ; a tincture is made from the dried herb tops. What is its general action ? Produces the most remarkable hallucinations and imaginations ; exaggeration of the duration of time and extent of space being most characteristic. It lessens the sensibility of the pulmonary and urinary tracts. What are its mental characteristics ? Illusions as to time and space ; a minute seems thousands of years, and things a short distance off seem yards away. What is the peculiar head symptom of Cannabis Indica ? There is a sensation as if the head were opening and shutting along the vertex.