CANNABIS 



175 



among club-shaped unicellular hairs of style; tracheae spiral or with 

 simple or bordered pores; sclerenchymatous fibers long, thin-walled, 

 non-lignified, and with few simple pores; laticiferous vessels with 

 reddish-brown contents. When mature seeds are present, palisade- 

 like stone cells occur, which are very thick-walled, and have a small 

 lumen. 



The drug is said to lose its activity when in the powdered condi- 

 tion. The same statement is true in regard to the powdered extract. 



FIG. 74. Cannabis indica: Cy, non-glandular hairs containing calcium carbonate 

 in the form of cystolith; G, multicellular glandular hairs of the bracts; Gs, 

 hairs of the bracts; Gs, multicellular heads of glandular hairs; S, papillae of 

 stigma; B, trachea? with bored pores, present in stem fragments; T, tracheae 

 with annular markings; P, pollen grains; Ca, rosette aggregates of calcium 

 oxalate; N, thick-walled non-glandular hair with numerous papillae on the 

 surface. 



Constituents. From 15 to 20 per cent of a resin (called cannabin), 

 consisting of a number of substances, one of which, cannabinol (can- 

 nabindon), occurs as a red, oily substance and is said to possess the 

 intoxicating properties of the drug. The drug also contains 0.3 

 per cent of a yellowish volatile oil, which consists chiefly of a ses- 

 quiterpene, cannibene and a stearoptene. A similar sesquiterpene 



