16 



THE TREE DOCTOR 



the leaf that pure "blood" can be manufactured from impure 

 material? You probably had not thought of this; but is it not 



Photo 3, A Wounded Tree. 



self-evident that perfectly pure, sound fruit cannot be manufac- 

 tured from polluted material? The lesson is, if you desire pure, 



Photo 4, A Hideous Wound. 



