THE POLYPETAL^ 



4 



1 



mend nor nmr the body. Mishaps have occurred throuo-li 

 eatincr Crucifera, e.cr. Watercress, but in such cases the 

 evil resides not in the plant itself, but in something that 



Kig. 40.— Wild MustftiJ (Charlock) 

 1, Flower (petals relieved). 2, Petal. 3, Fruit. 



has entered it from the outside and which is not a nomal 

 constituent. In the case of Watercress the bacilh of 

 typhoid fever are apt to gain entrance into tlie plant if 

 the latter is growing in sewage-contaminated water. 



