246 



POISONING. 



* Buxus sempervirens 



for hedges, are poisonous to all kinds of stock 



A.CEiE (box family). 



The leaves of the common hox, cultivated 



^.scuLAcr. (horse-chestnut family). 



iEsculus californica, California 



Fig. 100. — "Water hemlock {Cicu fa niacu- 

 lata), showing section of spindle-shaped 

 roots and lower stem, the leaves, flowers, 

 and fruit, one-half natural size ; also fruit 

 and cross-section of seed, enlarged five 

 times. 



which contained nearly 50 per cent. 

 from the effects of the poison, and 

 further suffering. 



huckeye : M. glabra, Oiiio buck- 

 eye ; fcetid buckeye : M. hippo- 

 castanum, horse - chestnut : M. 

 paYia, red buckeye. — The leaves 

 and fruit of these species are 

 generally regarded as poisonous 

 to stock. The fruit may be easily 

 converted into food by \Yashing 

 and boiling. It is believed that 

 a small quantity of the unpre- 

 pared fruit of the California buck-* 

 eye will cause cows to slip their 

 young. 



hypericace^ (st. John's wort 

 family). 



* Hypericum perforatum. — 



The common St. John's-wort is 

 commonly believed to cause dis- 

 agreeable eruptions on cows' 

 udders and on the feet of white 

 haired animals. This species 

 and the spotted St. John's wort 

 (H. inaculatu))i) were brought into 

 the United States Bureau of Agri- 

 culture by Dr. G. W. Bready, from 

 Norwood, Maryland, who stated 

 that five horses were poisoned in 

 May, 1808, by eating meadow hay 

 of these plants. One horse died 

 two were killed to prevent their 



POISONING ]{Y ST. JOHN S WORT. 



The ingestion of St. John's wort produces excitement followed ))y dul- 

 lness, interference with vision and hearing, and by visual hallucinations 



