248 



POISONING. 



washed, frozen, or dug out of the soil, or by drinkmg water m marshes 

 where the roots have been trampled upon. The roots of the other 

 species of Cicuta are undoubtedly poisonous, but cases have been 

 reported against one other species only, namely, C. holandcri. It grows 

 in marshy land in California. 



* Conium maculatum. — The well-known poison hemlock, or spotted 

 hemlock of Europe, is an introduced weed not uncommon in the north- 

 eastern section of the United States and in California. The plant is 



Fig. 103. — Narrow-leaf 

 laurel (Kalniia an- 

 gustifolid), showing 

 flowering branch, one- 

 third natural size. 



Fig. 104.^Broad-leaf laurel (Kalmia latifolia). 

 a, Flowering spray, one-third natural size ; 

 6, A'ertical section of flower showing pecu- 

 liar attachment of stamens, natural size ; c, 

 fruiting capsules, natural size. 



generally avoided by stock on account of its bad odour, but animals 

 have been killed by eating it in the fresh state. Since the poisonous 

 constituent is volatile, the dry plants are not so dangerous. 



POISONING BY HEMLOCK AND WILD CHERVIL (aNTHRISCUS SYLVESTRIS). 



Poisoning only results from ingestion of the green plants. It is 

 characterised by salivation, nausea, dyspnoea, generalised trembling and 

 vertigo, paraplegia, and symptoms of gastro-enteritis. 



