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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... "
The Canadian Entomologist - Página 154
1879
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A Report on the Insects of Massachusetts, Injurious to Vegetation

Thaddeus William Harris, Massachusetts. Zoological and Botanical Survey - 1841 - 484 páginas
...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 attacked...the trees to repair the injuries they have suffered. According to the observations of General HAS Dearborn, who has given an excellent account* of this...
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The Farmer's Encyclopædia, and Dictionary of Rural Affairs ..., Volumen1

Cuthbert William Johnson - 1844 - 1210 páginas
...bark. The seat of 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...will become disfigured and weakened by large porous tumours, caused by the efforts of the trees to repair the injuries they have suffered. According to...
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American Agriculturist, Volumen5

1846 - 392 páginas
...saw-dust 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...trees to repair the injuries they have suffered." According to the observations of a writer in the " Massachusetts Agricultural Repository and Journal,"...
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American Agriculturist, Volumen5

1846 - 390 páginas
...the bark. The seat of their operations is known by the oozing of the sap and dropping of the saw-dust 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...
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The Trees of America: Native and Foreign, Pictorially and Botanically ...

Daniel Jay Browne - 1846 - 542 páginas
...the bark. The seat of their operations is known by the oozing of the sap and dropping of the saw-dust 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 tumours, caused by the efforts...
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A Treatise on Some of the Insects of New England which are Injurious to ...

Thaddeus William Harris - 1852 - 536 páginas
...bark. The seat of 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...the trees to repair the injuries they have suffered. According to the observations of General HAS Dearborn, who has given an excellent account* of this...
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Transactions of the American Institute of the City of New York, Volumen11

American Institute of the City of New York - 1853 - 550 páginas
...their operations is known by the oozing of the sap and the dropping of the saw dust from the hoh s The bark around the part attacked begins to swell,...the trees to repair the injuries they have suffered. According (o the observations of Gen. HAS Dearborn, who kas given an excellent account (in vol. 6,...
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A Treatise on Some of the Insects Injurious to Vegetation

Thaddeus William Harris - 1862 - 700 páginas
...bark. The seat of 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...the trees to repair the injuries they have suffered. According to the observations of General HA S. Dearborn, who has given an excellent account* of this...
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The Farmer's and Planter's Encyclopaedia of Rural Affairs: Embracing All the ...

Cuthbert William Johnson - 1869 - 1296 páginas
...bark. The seat of 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...will become disfigured and weakened by large porous tumours, caused by the efforts of the trees to repair the injuries they have suffered. According to...
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The Canadian Entomologist, Volúmenes10-12

1878 - 798 páginas
...into the trunk, the general course of their winding and irregular passages THE CANADIAN ENTOMOLOGIST. being in an upward direction from their place of entrance....suffered. . . . The grubs attain their full size by the 20th of July, soon become pupae, and are changed into beetles and leave the trees early in September....
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