THE WTLDWOODS 31 



On the whole, then, we see that most of our trees require 

 a moderate amount of moisturo in the soil and in the air, 



Fi(t. 1(5. Cypress Swaiiip 



The short stumi)like structures ijrojcctiiij; out of the water are the 

 "cypress knees," peculiar outj^rowths from the roots of these 

 trees, apparently depeiuleut on the wet surroundings 



and that too much as well as too little water is fatal to 

 most of them. It seems also that drouglit is best endured 



