250 Twenty-Second Annual Report of the 



dant the trees are rendered unsightly and crippled, and are of no 

 commercial value. 



The moth lays its eggs early in August singly on the new buds 

 of the pine. The young larva soon hatches and eats its way into 

 the bud, where it spends the winter. As soon as the sap begins to 

 rise in the trees it leaves its winter quarters and bores into the 

 adjoining bud, destroying this and as many others as it needs for 

 food. When the remaining buds begin to grow into young shoots, 

 the larva attacks these as well, consuming the entire inside of the 

 youngest, and injuring the more developed ones so that they grow 

 downward and outward instead of upward. It is impossible to 

 reach the larva with any insecticide after it has once found its 

 winter quarters, and the only effective way of combating the pest 

 is to destroy the infected buds and twigs. Pruning of this kind in 

 the fall and winter months will minimize the damage in the spring, 

 but it is more difficult to determine the existence of the pest at 

 this time than when the injury is further developed. A little 

 practice, however, will enable the nurseryman to recognize the 

 trace of pitch at the base of the bud covering the entrance hole of 

 the larva. 



A fuller history is given in a publication of the Federal De- 

 partment of Agriculture, Bulletin Wo. 170. 



PUBLICATIONS OF THE BUREAU 



Two bureaus of the Department, including the Bureau of Horti- 

 culture, were notified to cooperate with the Department of Educa- 

 tion, the Conservation Commission and the Board of Health, in 

 preparing material suitable for the use of the Department of 

 Education for the Arbor Day exercises in 1915. Circular No. 

 113 was prepared for this purpose. 



Careful attention was given during the year to the revision of 

 Circular No. 58, entitled, " Injurious Insect Pests, Fungous Dis- 

 eases and Spray Formulae." This was perfected to September 1, 

 1915. The popularity of this circular is attested by the fact that 

 this edition and its predecessors number over thirty thousand 

 copies. 



The bureau has also issued Circular 119, " List of Nurserymen 

 in the State of New York Who Received Certificates of Inspec- 



