Insects Injurious to the Potato and Apple. 581 



obvious to any one that unwashed apples picked up from 

 ground over which tliere coukl bv any possibility be even 

 the least sprinkling of Paris green, should not be eaten. 

 The substance can be safely used if proper and constant 

 care be taken, otherwise not. 



The Colorado beetle has quite a number of insect para- 

 sites that attack it in various stages of its existence. Among 

 these are several species of lady-bugs, four or five black bugs 

 like our squash bug, as many beetles besides the lady-bugs 

 including the striped blister beetle, a species of wasp and a 

 few birds. In Iowa the Rose-breasted Grosbeak has been 

 seen eating the striped potato beetles greedily, and as the 

 insect spreads over the country its natui-al enemies seem to 

 increase in number and efficacy. 



INSECTS INJURIOUS TO THE APPLE. 



The number of insects that infest apple trees is very 

 large. I doubt if there be any other cultivated plant or 

 tree attacked by so many. Some attack one part, some an- 

 other, each species having its o^vn peculiar mode and place 

 of assault. Some injure the root, some the bark, others the 

 wood, many eat the leaves, others the buds, others the flow- 

 ers, others the fruit, and the wonder is that we can have 

 any fruit from this tree at all. 



