 ... the approach of winter, during which they remain at rest in a torpid state. In the spring they bore through the sapwood, more or less deeply into the trunk, the general course of their winding and irregular passages, being in an upward direction from...  American Agriculturist - Página 3451846Vista completa - Acerca de este libro
 | Thaddeus William Harris, Massachusetts. Zoological and Botanical Survey - 1841 - 484 páginas
...winter, during which they remain at rest in a torpid state. In the spring they bore through the sapwood, more or less deeply into the trunk, the general course...of their holes as fast as they are made, but after a while the passage becomes clogged and the burrow more or less filled with the coarse and fibrous... | |
 | Cuthbert William Johnson - 1844 - 1210 páginas
...winter, during which they remain at rest in a torpid state. In the spring they bore through the sap-wood, more or less deeply into the trunk, the general course...of their holes as fast as they are made, but after a while the passage becomes clogged, and the burrow more or less filled with the coarse and fibrous... | |
 | Daniel Jay Browne - 1846 - 542 páginas
...during which, they remain at rest, in a torpid state. In the spring, they bore through the sap-wood, more or less deeply into the trunk, the general course...with the coarse and 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... | |
 | Samuel Maunder - 1848 - 924 páginas
...in в torpid state, hut in spring tlicv bore more or lees deeply hito the trunk, the general conree of their winding and irregular passages being in an...upward direction from the place of their entrance. COAL-FISH. (GtuJia carbonaria*.} A Mttlacopterygiom ¡Mi inhabiting the Baltic, the Northern, and the... | |
 | Thaddeus William Harris - 1852 - 536 páginas
...winter, during which they remain at rest in a torpid state. In the spring they bore through the sap-wood, more or less deeply into the trunk, the general course...of their holes as fast as they are made, but after a while the passage becomes clogged and the burrow more or less filled with the coarse and fibrous... | |
 | American Institute of the City of New York - 1853 - 550 páginas
...winter, during which they remain at rest in a torpid state. In the spring they bore into the sap wood, more or less deeply into the trunk, the general course of their winding and irregular passages being an upward direction from the place of their entrance. For a time they cast their chips out of their... | |
 | Thaddeus William Harris - 1862 - 700 páginas
...winter, during which they remain at rest in a torpid state. In the spring they bore through the sap-wood, more or less deeply into the trunk, the general course...of their holes as fast as they are made, but after a while the passage becomes clogged and the burrow more or less filled with the coarse and fibrous... | |
 | Cuthbert William Johnson - 1869 - 1296 páginas
...winter, during which they remain at rest in a torpid state. In the spring they bore through the sap-wood, more or less deeply into the trunk, the general course...of their holes as fast as they are made, but after a while the passage becomes clogged, and the burrow more or less filled with the coarse and fibrous... | |
 | Entomological Society of Ontario - 1872 - 416 páginas
...During winter they remain at rest in a torpid state. In the spring they bore through the sap-wood, more or less deeply into the trunk, the general course...of their holes as fast as they are made, but after a while the passage becomes clogged, and the burrow more or less filled with the coarse and fibrous... | |
 | 1878 - 798 páginas
...during which they remain at rest in a torpid state. In the spring they bore through the soft wood, more or less deeply 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. For a time they... | |
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