88 



AGRICULTURE ON THE PACIFIC SLOPE 



What protects the soft growing parts from drying up 

 and from attacks of enemies? The cambium is pro- 

 tected by the bark. The tip of the stem is protected 

 by the leaves which fold over it. In winter it is also 



FIG. 45. Cambium growing out to heal the wounds at the ends of grape 



cuttings. 



protected by a sort of leaves called bud scales. They 

 are covered with hairs, wax, and varnish to prevent 

 drying up. The tip of the root is protected by a small 

 cap called the root cap. 



