88 



October 15, 1900, peelings from a verj' badly infested pear were 

 placed against and around the base of a very j^onng peach tree, and 

 on 26th of same month these were renewed. July 9, 1901, no scale 

 could be found on the tree. 



October 15, 1900, six badly infested plums were placed 4 inches 

 from base of a young apple tree, and two infested apples were placed 

 in similar proximity to another young apple tree. July 9, 1901, no 

 scale was to be found on either tree, previous inspections by others 

 having given the same results. 



October 15, 1900, six infested plums were placed against the base of 

 a 3^oung apple tree ; an infested apple was placed against the base of 

 another tree, also young; an infested pear was placed against the base 

 of a young peach tree, and eleven days later another infested pear 

 was placed against the base of this last tree. Up to July 9, 1901, none 

 of these trees carried a single San Jose scale, so far as could be learned 

 from repeated observations hj different entomologists. 



As indicating the activity of San Jose scale on fruit, during the 

 period between October 15 and November 2, 1900, the following obser- 

 vations are of interest: October 9, 1900, a couple of windfall apples, 

 very badly infested by San Jose scale, were placed under observation. 

 October 13 young scale were alive and ver}^ active on both apples; on 

 18th one apple was nearly decayed and many of the females were 

 dead, five, however, remained alive and contained living young; 19th, 

 live females and active young found on both apples; 22d, one apple 

 decayed, the females dead, and apple discarded, the remaining apple 

 carried living females, but no young were observed. November 2, 

 1900, the remaining apple carried living females, but bj^ 16th this 

 apple also was decayed and the scale all dead. 



In this connection it must be remembered that it was only after 

 repeated attempts to introduce the San Jose scale in the insectar}^, by 

 fastening sections of badly infested limbs to young trees growing 

 therein, that we were able to succeed. While the foregoing does not 

 and could not prove that infestation may not originate from infested 

 fruit, it does show the great difficulty in causing it to do so. 



In all of our microscopical examinations of scale insects Aplielinus 

 j-uscipennis has been found but tAvice, in both cases in San Jose scale. 

 Pentilia misella is, however, on the increase. 



The plum tree mite {Phytoptus pliloe.ocopies) seems to occur gener- 

 ally wherever the Damson plum is grown, as it has been observed or 

 sent from all quarters of the State. Serious damage was this year 

 reported from Wells ville. 



Trirliabda tomentosa was observed in the act of defoliating young 

 prickly ash {Xanthoxylum americanum) in August, in some cases the 

 trees dying from the effects of these beetles. 



Iscliyrus nigrans has been reared from a species of Agaricus. 

 Antliaxia inridifrons, Eupristocerus cogitaiis, Sinoxylon hasilare, 



