. Ontario Sessional Papers, 1907, OMOLOGICAL SOCIETY. 55 the maple trees* they attack; but they are rarely to be found in numberstwo years running, and as they work late in summer they do not injure thetrees very much, the leaves having by that time nearly completed the dis-charge of their functions. If found to be necessary, a simple remedy wouldbe to rake up the leaves, including the cases, under the trees and Ijurn themon the spot. Dr. Fletcher, in his Re])ort for 1885, records an attack by thisinsect on maple trees in the neighborhood of Ottawa, and also relates asimilar visitati
. Ontario Sessional Papers, 1907, OMOLOGICAL SOCIETY. 55 the maple trees* they attack; but they are rarely to be found in numberstwo years running, and as they work late in summer they do not injure thetrees very much, the leaves having by that time nearly completed the dis-charge of their functions. If found to be necessary, a simple remedy wouldbe to rake up the leaves, including the cases, under the trees and Ijurn themon the spot. Dr. Fletcher, in his Re])ort for 1885, records an attack by thisinsect on maple trees in the neighborhood of Ottawa, and also relates asimilar visitation in Missisquoi County, P. Que., described by the Rev. in the year 1881. The Spruce Gall-louse (Chermcs ahietis) Fig. IT, has become a seriousenemy to spruce trees and is causing much trouble and anxiety to the growersof these ornamental trees in many parts of the Province. It is Aery abun-dant at Guelph, Gait, Minden, Chatham and various other places. As ithas frequently been described and referred to in these Annual Reports, it. Tl//1 Fii;. 17.—Spruce Gixli-louse. a, summer form of nymph ; b. afTected twig. may suffice to mention now that good results have been obtained by sprayingaffected trees at the time the young plant-lice are exposed with a tobaccoand soap wash or with kerosene emulsion. This should be done in May whenthe young lice emerge from the eggs and before they are enclosed in the galls,and also towards the end of August when the winged forms come out of thegalls. The terminal shoots should be watched at those times and the spray-ing performed as soon as any of the insects are to be seen moving are .^o minute that a magnifying glass will be required to .<?ee spraying should be repeated two or three times at short intervals, as theinsects do not all come out at the same time. The Larch Saw-fly (Ncmatus Enrhsonii) is still to be fo\ind here in asmall plantation on the College premises. Towards the end of July full-grown larvae we
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