io8 



NATURE STUDY AND LIFE 



it would seem that either pollen or particles of dust that 

 had absorbed the oil from the leaves must be carriers for 

 the poison. Ordinary washing, even with soap, merely 



Fig. 44. Poison Ivy 



spreads the oil and serves to rub it in. If poisoning has 

 occurred, or if there has been serious exposure in hand- 

 ling or destroying the plants, affected or exposed parts 

 should be bathed in a strong solution of lead acetate in 



