502 XKW JEK8EY AGKlCULTrKAL COLLEGE 



fliily llrh, nfror the heavy wiiulstonu of rhe day Ix^t'ore, Ah*. 

 ])iekei'son ngniii \veiir over the ground Avith Air. l^anuwart aud 

 examined more partieuhn-ly the broken branches and liml>s that 

 everywh.ere testitieii to the foree of the Avind. The work of the 

 Avoot^l kn^pard moth was in evidence everywhere, and particiihirly 

 on ehns and soft maples, the weakening of the brandies caused by 

 their borings being responsible for a large proportion of the 

 breakage. 



As to general insecticide work, the spraying was done with a 

 combination of arsenate of lead and Bordeaux mixture at the rate 

 of ten pounds in one hundred gallons of water, and that did not 

 seem strong enough to kill the nearly mature c^iterpillars of the 

 tussook moth, though it did appear to make them sick and to 

 hasten their descent from the. trees. This and the elm-leaf beetle 

 have been the most troublesohie species, though the beetle was not 

 as abundant as it was at Xew Brunswick. The insects have be^n 

 kept in check pretty Avell, however, in the parks and o^i the main 

 streets, bur on some of the side streets hei-e and there wei*e a few 

 bad ti'ces, because it \'as simply impossible to get everywhere in 

 time. 



October ilOth. Air. iKUinwart wrote uic. in response to my re- 

 quest, a sumnuiry of what had been done, which is as follows, 

 omitting some irrelevant details : 



The most troublesome pests which afflicted our voting elms were 

 the elm beetles. Our spraying during the tirst of the season was 

 very successful, but in two subsequent spraying's we did a gi'e^it 

 deal of harm. As soon as I found, after the men had worked 

 two days, that the leaves Avere being injured, I stopped the spray- 

 ing with that insecticide : btit most of the elms had been gone over 

 in that time and a great many of them had lost their leaves. We, 

 of course, do not want to give up to the elm-leaf beetle. Wo ex- 

 pect to spray early in the season next spring witli a liope of killing 

 the adults. I have no.t noticed any givat injury resulting from 

 their work on the larg-e elms. 



The insects second in importance were the tussot^k moth cater- 

 pillai-s. We protected the park trees against them absolutely. The 

 work on the street trees was at leitst 75 per cent, better than 

 last vear. and there were no small tives defoliated by them. 

 We creosoted the egg-masses preparatory to the second brvx>d. and 



