BOOTS. 



27 



In the Indian corn, roots are sent out from nodes at some 

 distance above the ground and finally descend until they 



Fig. 13.— Aerial Boots of an Orchid. 



enter the ground. They serve the double purpose of anchor- 

 ing the corn-stalk so as to enable it to resist the wind and of 

 supplying additional water to the plant.^ 



1 Specimens of the lower part of the corn-stalk, with ordinary roots and aerial 

 roots, should be dried and kept for class study. 



