28 MEDICINAL HERBS AND POISONOUS PLANTS 



in India, and for many years was imported into Great 

 Britain from this country. The value of the rhizome 

 depends on the presence of an aromatic volatile oil (2*8 

 per cent) and a bitter principle called acoriii. The drvi^" 



^^*> 



Fig. 12. —Sweet Yln^ (Aconts Calamus) 



luxs certain tonic and stimulant properties, and has been 



a (me 



Cultivation. — Grows readily on unused ground in damp 

 localities near ditches and stieamts. There is a ready sale 

 for the diied rhizomes, the War boin;^^ responsible for the 

 increased demand. 



