. Annual report. must be foughtpersistently wherever they occur. THE WOODLAND PROBLEM. The examinations made by our inspectors have developedthe fact that in nearly all the woodlands in the central in-fested district the gypsy moth occurs in alarming numbers,while the brown-tail moth is also very much in severe woodland infestation constitutes the greatestmenace to the successful control of the gypsy moth. Solong as the woodlands remain severely infested, it is im-possible to keep streets and residential sections free fromthe pest. These woodland colonies, traversed by roads,boul
. Annual report. must be foughtpersistently wherever they occur. THE WOODLAND PROBLEM. The examinations made by our inspectors have developedthe fact that in nearly all the woodlands in the central in-fested district the gypsy moth occurs in alarming numbers,while the brown-tail moth is also very much in severe woodland infestation constitutes the greatestmenace to the successful control of the gypsy moth. Solong as the woodlands remain severely infested, it is im-possible to keep streets and residential sections free fromthe pest. These woodland colonies, traversed by roads,boulevards and cart paths, yield in the caterpillar season amultitude of swarming insects, which travel outward in alldirections, stripping the foliage as they go. What is moreimportant they drop in large numbers upon passing vehicles,and are thus transported over wide areas, although the effectof the scattering is most noticeable within a few miles of thecolonies. Thus the insects are able to reinfest sections from. Pines and other trees defoliated by gypsy moth caterpillars on property of Walter C. Wright. Medford, Mass., June, 1905 1906.] PUBLIC DOCUMENT--No. 73. 141 which they have been previously cleared. It is practicallyimpossible, for example, to keep the residential sections ofMedford or Saugus measurably clear of the gypsy moth whilethe large woodland colonies flourish but a short distance away. The funds available under the act, both from municipalitiesand from the State, are not sufficient to carry on any generalcampaign against the moth in woodlands. Believing it hisduty to present to the Legislature all known facts bearing onthe problem of controlling the gypsy moth, the superintend-ent has had a fairly careful examination made of the wood-land colonies, and gives below a statement of their area, asprepared by the assistant superintendent, Mr. D. M. Rogers,who was in charge of this investigation. In many cases he could not obtain an exact statement ofthe acreage invol
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