INDEX 



615 



Wood tissues, injury from cold, 

 157 



Wounds, protecting, pruning, 243 

 Y 



Yield and size of apple trees as 



affected by pruning, 227 

 Yields, blueberry, 580 



brambles, 558 



cherry, 129 



Yields, currant and gooseberry, 570 

 estimating, apple, 2 

 peach, 114 

 pear, 123 



plums and prunes, 127 

 quince, 133 

 strawberry, 488 



Z 



Zinc arsenate, 276 



