100 I 



The President appoiuted as committee on nomination of oificers i 

 Messrs. Webster, Kellicott, and Southwick. 



The Association then adjourned to meet at 10 a. m. August 10. 



AUGUST 16— MORNING- SESSION. 



The Association commenced at 10 a. m., President Lintner in tlie 

 <?liair. The minutes of the preceding session were read and approved. 

 On motion of Mr. Osborn the Secretary was instructed to assess the 

 members sufficiently to provide funds for paying the necessary ex- 

 penses. Carried. 



Mr. Kellicott offered the following resolution, which was adopted by 

 the Association : 



i?e8o/re(i, That oue member of this Association be appointed a committee (to act 

 with similar committees appointed by other societies) to confer with the council of 

 the A. A. A. S. regarding a change in the day of the week set for the beginning of 

 its annual meetings. 



Mr. Kellicott was appointed by the President as a committee to pro- 

 ceed in accordance with this resolution. 

 The first paper brought before the Association was as follows : 



THE PEAR-TREE PSYLLA. i 



{Psi/Ua pyricola.) 1 



By M. V. Slingerland, Ithaca, N. Y. 



This insect appeared in enormous numbers in different parts of this I 

 State, especially in the Hudson River Valley and at Ithaca, during I 

 1891; and orchards which promised 1,200 barrels of fruit at blossoming I 

 time developed less than 100 barrels ; leaves and blighted fruit dropped i 

 in August, and some trees were killed. It is one of the most serious i 

 pests that pear-growers have to fear. i 



The adult insect measures scarcely three millimeters in length, is ' 

 very active, and strikingly resembles a Cicada in miniature. The I 

 nymphs are oval, exceediugly flat objects, of a light yellowish color when { 

 young, but becoming blackish with distinct markings when full grown, j 

 The light yellowish cylindrical-ovate eggs, which are scarcely visible to 

 the unaided eye, are attached by a short stalk near the larger end, and 

 have a long slender thread projecting from the smaller end. 



My observations upon this pest began in December, 1891. At that 

 time adults and a few nymphs were found hidden in the crevdces of the 

 bark of the pear trees; no eggs were found. The hibernating adults 

 were watched, and the trees carefully examined at various times dur 

 ing the winter, but no eggs were laid until about April 10, when the 

 adults were frequently seen in copulation. These eggs were laid in the 

 creases of the younger branches, about the bases of terminal buds. 

 Eggs on branches brought into the insectary at this time hatched in 



