. Insect enemies of the spruce in the Northeast : a popular account of results of special investigations, with recommendations for preventing losses . 1 Timber flooded and killed by Water on the Magalloway. PLATE XVI. Sections of wood cut from Balsam Fir, showing rapid growth, after the old spruces die or are felled. 1. Froui fir hy dead tree in cutting of about l^vS, 2. From fir standing by dead spruce in old cutting of about 1886. 3. From fir standing by dead tree that showed the work of the spruce beetle. Tree evidently died about 1SSS. 4. From fir in blow down of about 1871, which was foll
. Insect enemies of the spruce in the Northeast : a popular account of results of special investigations, with recommendations for preventing losses . 1 Timber flooded and killed by Water on the Magalloway. PLATE XVI. Sections of wood cut from Balsam Fir, showing rapid growth, after the old spruces die or are felled. 1. Froui fir hy dead tree in cutting of about l^vS, 2. From fir standing by dead spruce in old cutting of about 1886. 3. From fir standing by dead tree that showed the work of the spruce beetle. Tree evidently died about 1SSS. 4. From fir in blow down of about 1871, which was followed by another in about 1SS5-S6. 5. From fir in blow down of about 18S6. 6. From spruce standing by large tree broken by a storm about 1886. Evidence was found in this tree that it was living when felled and that it had beenattacked after failing by the spruce beetle. Both galleries and remains ofbeetles were found in the bark. 7. Section of small suppressed spruce about 45 or 50 years old—ail natural size. o Jul. 28, New Series, Div. of Entomology, U. S. Dept of Agriculture. Plate
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1901
