 The female has no wings, is of the size of a small pea, of a brownish-red colour, and is covered with a whitish dust. From the middle of May to the middle of June the eggs are collected, and exposed to the vapour of vinegar, to prevent their incubation....  The Technologist. Ed. by P.L. Simmonds - Página 159editado por - 1862Visualização completa - Sobre este livro
 | Edward Andrew Parnell - 1846 - 770 páginas
...eggs are collected, and exposed to the vapor of vinegar, to prevent their incubation. A portion of eggs is left upon the tree for the maintenance of the brood. In the department of the Bouches-du-Rhone, one half of the kermes crop is dried. It amounts annually... | |
 | Thomas Antisell - 1852 - 728 páginas
...eggs are collected, and exposed to the vupor of vinegar, to prevent their incubation. A portion of eggs is left upon the tree for the maintenance of the brood. In the department of the Bouchcs-dn-Rhone, one-half of the kermes crop is dried. It amounts annually... | |
 | G.P. Putnam & Co - 1852 - 728 páginas
...eggs arc collected, and exposed to the vapor of vinegar, to prevent their incubation. A portion of eggs is left upon the tree for the maintenance of the brood. In the department of the Piouchcs-du-Rlione, one-half of the kenues crop is dried. It amounts annually... | |
 | Andrew Ure - 1853 - 1034 páginas
...eggs are collected, and exposed to the vapour of vinegar, to prevent their incubation. A portion of eggs is left upon the tree for the maintenance of the brood. In the department of the Bouches-du- Rhone, one half of the kermes crop is dried. It amounts annually... | |
 | Andrew Ure - 1853 - 1034 páginas
...eggs are collected, and exposed to the vapour of vinegar, to prevent their incubation. A portion of eggs is left upon the tree for the maintenance of the brood. In the department of the Bouches-du-Rhone, one half of the kermes crop is dried. It amounts annually... | |
 | Andrew Ure - 1860 - 786 páginas
...eggs are collected, and exposed to the vapour of vinegar, to prevent their incubation. A portion of eggs is left upon the tree for the maintenance of the brood. In the department of the Bouches-du-Rhone, one half of the kermes crop is dried. The kermes of Poland,... | |
 | 1862 - 508 páginas
...Bouches-du-Rhone, one half of the kermes crop is dried. It amounts annually to about sixty quintals or ewts., and is warehoused at Avignon. From the middle of May...which arises from stirring it about, is considered the most valuable part, and when mixed with vinegar is called pastel or carmine. The species of oak on... | |
 | Peter Lund Simmonds - 1872 - 654 páginas
...60 cwts., and is warehoused at Avignon. From the middle of May to the middle of June the egg-cases are collected, and exposed to the vapour of vinegar...prevent incubation. A portion of the eggs is left on the tree for the maintenance of the brood. The species of oak on which the kermes insect is found... | |
| |
