185 



at any time during' the winter with kerosene emulsion diluted from 7 

 to 9 times will, it is believed, reach and destroy many of the insects, 

 and will be more eflective if the loose bark be scraped from the trunk 

 and larger limbs before the application be made. 



Mr. Davis wanted to know the authority for the occurrence of the 

 species in Michigan, and was informed that it was reported by Mr. 

 Schwarz. 



Mr. South wick reported a case of extraordinary abundance near New 

 Baltimore, N. Y., in 1893, which was followed by almost total disap- 

 pearance the present season. 



Dr. Lintner referred to a case reported by him of a similar excessive 

 abundance with total disappearance the year following in the Hudson 

 River valley; but said that the insect had again appeared this year. 

 He referred to the experiments by Mr. Slingeriand, indicating that pure 

 kerosene was eflective in destroying the eggs of the Psylla, and stated 

 in the same connection that he had applied undiluted kerosene to plum 

 and rose in full leaf without material injury. 



Mr. Marlatt said that from his experience it seemed probable that 

 the reports of failure to destroy the eggs with very strong mixtures had 

 been due to the fact that the observations had not been continued long- 

 enough ; and by referring to his experiments he showed that the eggs 

 retained for a long time after treatment every appearance of life, but 

 eventually, with the strongest washes, shriveled and died in large per- 

 centage. In answer to questions by Mr. Ashmead, he also stated that 

 no true parasites had been reared from any stages of the Psylla. 



Mr. Smith said he would defer his discussion of this paper until his 

 own, which included the same subject, was read. This paper followed. 



NOTES OF THE YEAR IN NEW JERSEY. 



By John B. Smith, New Brunswick, N. J. 



Although it is early in the season for a review of its insects, yet my 

 experience has been that practically most of the damage to crops in 

 our State is done before the middle of August; and that after that 

 time insect life, or at least that portion of it which preys upon culti- 

 vated i)lants, is on the decline. In our State the season has been an 

 extremely interesting one from the insect standpoint, and it has been 

 at the same time the most destructive within my experience. So many 

 troubles made their appearance that I found it desirable to spend in 

 actual field work between forty and fifty days between April 30 and 

 August 10. 



In the first place, the San Jose scale forced itself upon my atten- 

 tion, and it occupied a large portion of my time in following out its 



