AGRICm,TURAL EXPERIMENT STATION. 151 



it. If the season is cold and damp a second application should be 

 made later in the season. The spraying pump used to apply copper 

 solutions should be made of copper and the valves of rubber. 



To determine whether the spraying does good the application 

 should be made only to alternate trees in the row or to one side of 

 each tree. The effects upon the trees can thus be readily compared. 



INJURIOUS INSECTS. 



Quite a number of letters have been received at the station the 

 past season asking information about insects doing injury in the 

 State. 



These letters in most cases were accompanied by specimens and 

 were answered, when necessary, in detail giving habits, descrip- 

 tion and known remedies. 



The number of letters received and the apparent want of infor- 

 mation regarding insects doing damage to fruit and fruit trees in 

 the State has convinced the writer that a condensed account of the 

 characters, life history and known remedies of some of our com- 

 mon pests, would be acceptable to the fruit growers and farmers of 

 the State. 



In the account of insects given below we have gleaned the infor- 

 mation from various sources and claim no originality, the object 

 being to place in the hands of those who have not access to the 

 writings of entomologists the means of identif^'ing our common 

 insects in all their stages and thus enable an intelligent warfare to 

 be waged against them. 



The cuts used to illustrate the insects considered were obtained 



from J. B. Lippincott & Co , of Philadelphia, and are electros after 



figures occurring in Saunder's Insects Injurious to Fruits. 



Below is given a list of the insects that were reported and con- 

 * 

 sidered, together with the injuries attributed to them. 



The most important of these have received attention in detail, 



wliile unimportant ones have not been illustrated and receive only 



passing notice. 



