Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Libros Libros 1 - 10 de 28 sobre ... the passage becomes clogged and the burrow more or less filled with the coarse...
" ... the passage becomes clogged and the burrow more or less filled 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 operations is known by the oozing of... "
The Canadian Entomologist - Página 138
1878
Vista completa - Acerca de este libro

A report on the insects of Massachusetts: injurious to vegetation, Volumen3

Thaddeus William Harris, Massachusetts. Zoological and Botanical Survey - 1841 - 459 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...
Vista completa - Acerca de este libro

The Farmer's Encyclopædia, and Dictionary of Rural Affairs ..., Volumen1

Cuthbert William Johnson - 1844 - 1165 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...
Vista completa - Acerca de este libro

The American Agriculturist, Volumen5

1846
...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,"...
Vista completa - Acerca de este libro

The Trees of America: Native and Foreign, Pictorially and Botanically ...

Daniel Jay Browne - 1846 - 520 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...
Vista completa - Acerca de este libro

The American Agriculturist, Volumen5

1846
...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...
Vista completa - Acerca de este libro

A Treatise on Some of the Insects of New England: Which are Injurious to ...

Thaddeus William Harris - 1852 - 513 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...
Vista completa - Acerca de este libro

Annual Report

American Institute of the City of New York - 1853
...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,...
Vista completa - Acerca de este libro

A Treatise on Some of the Insects Injurious to Vegetation

Thaddeus William Harris - 1862 - 640 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...
Vista completa - Acerca de este libro

The Farmer's and Planter's Encyclopaedia of Rural Affairs: Embracing All the ...

Cuthbert William Johnson - 1869 - 1179 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...
Vista completa - Acerca de este libro

The Canadian Entomologist, Volúmenes11-12

1879
...wood, more or less deeply into the trunk, the general course of their winding and irregular passages being in an upward direction from their place of entrance....suffered. . . . The grubs attain their full size by the 2oth of July, soon become pupae, and are changed into beetles and leave the trees early in September....
Vista completa - Acerca de este libro




  1. Mi biblioteca
  2. Ayuda
  3. Búsqueda avanzada de libros
  4. Descargar EPUB
  5. Descargar PDF