 | Pennsylvania. Department of Agriculture - 1897 - 886 pages
...their operations is known by the oozing of the sap and the dropping of the sawdust from the holes. The bark around the part attacked begins to swell, and in a few years the trunk and limbs will become disfig ured and weakened by large porous tumors, caused by the effort of... | |
 | Pennsylvania. Department of Agriculture - 1898 - 350 pages
...holes. The .bark around the part attacked begins to swell, and in a few years the trunk and liirbs will become disfigured and weakened by large porous...trees to repair the injuries they have suffered." The beetle is about three-fourths of an inch in length, velvet black and ornamented with yellow transverse... | |
 | Pennsylvania. Department of Forests and Waters - 1898 - 346 pages
...their operations is known by the oozing of the sap and the droppings of the sawdust from the holes. The bark around the part attacked begins to swell, and in a few years the trunk and limbs will become disfigured and weakened by large porous tumors, caused by the efforts of... | |
 | 1918 - 702 pages
...seat of their operations is known by the oozing of the sap and the dropping of sawdust from the holes. The bark around the part attacked begins to swell, and in a few years the trunks and the limbs become disfigured by large porous tumors. The grubs attain their full size by the twentieth... | |
 | Minnesota. State Entomologist - 1908 - 220 pages
...their operations is known by the oozing of the sap and the dropping of the sawdust from the holes. The bark around the part attacked begins to swell,...repair the injuries they have suffered. According to the observations of Gen. HAS Dearborn, who has given an excellent account of this insect, the grubs... | |
 | 1908 - 596 pages
...their operations is known by the oozing of the sap and the dropping of the sawdust from the holes. The bark around the part attacked begins to swell, and in a few years the trunks and lirnbs will become disfigured and weakened by large porous tumors, caused by the efforts of the trees... | |
 | University of Minnesota. Agricultural Experiment Station - 1909 - 474 pages
...their operations is known by the oozing of the sap and the dropping of the sawdust from the holes. The bark around the part attacked begins to swell,...repair the injuries they have suffered. According to the observations of Gen. HAS Dearborn, who has given an excellent account of this insect, the grubs... | |
 | New York State College of Agriculture - 1917 - 1010 pages
...seat of their operations is known by the oozing of the sap and the dropping of sawdust from the holes. The bark around the part attacked begins to swell, and in a few years the trunks and the limbs become disfigured by large porous tumors. The grubs attain their full size by the twentieth... | |
 | New York (State) Dept. of Agriculture - 1917 - 994 pages
...seat of their operations is known by the oozing of the sap and the dropping of sawdust from the holes. The bark around the part attacked begins to swell, and in a few years the trunks and the limbs become disfigured by large porous tumors. The grubs attain their full size by the twentieth... | |
 | Entomological Society of Ontario - 1877 - 572 pages
...and in a few years the trunks and limbs will become disfigured and weakened by large porous tumours', caused by the efforts of the trees to repair the injuries they have suffered." The history of this insect is rather a curious one. For a little over a hundred years it has been known... | |
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... fibrous fragments of wood, to get rid of which the grubs are often obliged to open new holes through the bark. The seat of their operations is known by the oozing of the sap and the dropping of the saw-dust from the holes. The bark around the part... 
