126 DA VE r ' s PR IME R 



The scale is not the only enemy of the trees. 

 Insects of every description are on the increase. 

 Recently, in the neighborhood of Pittsburg, Pa., the 

 canker worms appeared and stripped miles of forest 

 trees. There were untold billions of them. Fruit 

 trees, as well, were defoliated. All trees looked as 

 if a fire had run through them. The row of fine young 

 apple trees, shown in the upper photo on the next page, 

 is a sample of how the trees looked. In the lower 

 photo you have a view of a twig that had escaped 

 and one that had been eaten. 



In the neighborhood where the scourge was the 

 worst, a gentleman had his property fenced in with 

 wire netting, to keep his chickens and turkeys from 

 bothering his neighbors. Here the worms made no 

 havoc, as the birds caught the female canker worm 

 (which is wingless) before they crawled up the trees. 

 This shows the value of even common poultry to help 

 us save our trees. With the restoration of native birds 

 we would have but little trouble from such attacks. 

 Even many of the " scale " are eaten by the oriole and 

 house wren (see pages 151 and 159). 



The English sparrow should be annihilated, for thev 

 break the eggs and kill the young of native birds and 

 destroy no insects, of any account. 



