k OST people have seen . 

 a sick cat eat grass, or an 

 uneasy dog seek out some 

 weed and devour it greedily to make his 

 complaining stomach feel better. Some few 

 may have read John Wesley's directions on 

 the art of keeping well which have not, 

 however, found their way into his book of 

 discipline for the soul and have noted with 

 surprised interest his claim that many medi- 

 cines in use among the common people and 

 the physicians of his time were discovered 

 by watching the animals that sought out 

 these things to heal their diseases. " If 



2I 9 



