Histoire naturelle des insectes : comprenant leur architecture, transformations, sens, nourriture, habitudes--collection, préservation et arrangement . pleurée, c'est d'une structure dure, ligneuse, et forme une protubérance irrégulière, parfois aux MOUCHES-MOUCHES. 387 extrémité, et parfois sur le corps, d'une branche.Mais au lieu d'une, cela a un nombre considérable de cellules, irrégulièrement distribuées par sa substance.La structure est quelque peu spongieuse, mais fibreuse; De l'extérieur, l'écorce est plus lisse que celle de la branche sur laquelle elle pousse.* Les billes de cassis (comme les Français les appellent) de théchêne sont e

• Contributeur: The Reading Room / Alamy Banque D'Images
• ID de l’image: 2AN4ATX
• Taille du fichier: 7,1 MB (243,8 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 1657 x 1508 px | 28,1 x 25,5 cm | 11 x 10,1 inches | 150dpi

Informations supplémentaires

Cette image appartient au domaine public, ce qui signifie que le droit d’auteur a expiré ou que le titulaire du droit d’auteur a renoncé à ses droits. Les frais facturés par Alamy couvrent l’accès à la copie haute résolution de l’image.

Cette image peut avoir des imperfections car il s’agit d’une image historique ou de reportage.

Natural history of insects : comprising their architecture, transformations, senses, food, habits--collection, preservation and arrangement . cribed, this is of a hard, ligneous structure, andforms an irregular protuberance, sometimes at the GALL-FLIES. 387 extremity, and sometimes on the body, of a branch.But instead of one, this has a considerable numberof cells, irregularly distributed through its substance.The structure is somewhat spongy, but fibrous; andexternally the bark is smoother than that of thebranch upon which it grows.* The currant-galls (as the French call them) of theoak are exactly similar, when formed on the leaves, to those which we have first described as producedon the leaves of the willow and other trees. But thename of currant-gall seems still more appropriate toan excrescence which grows on the catkins of theoak, giving them very much the appearance of astraggling bunch of currants or bird-cherries. Thegalls resemble currants which have fallen from thetree before being ripe. These galls do not seem todiffer from those formed on the leaves of the oak;and are probably the production of the same insect.. Currant-Gall of the cathins of the Oak, produced quercus pedunculi? Cynips J, R. 388 IXSECT ARCHITECTURE. which selects the catkin in preference, by the sameinstinct that the oak-apple orall-fly, as we have seen, sometimes deposits its eggs in the bark of the oaknear the root. The gall of the oak, which forms an importantdye-stuff, and is used in making writing-ink, is alsoproduced by a Cynips, and has been described in theLibrary of Enteriaining Knowledge, (VegetableSubstances, p. 16.) The employment of the Cympspsenes for ripening figs is described in the samevolume, p. 244. Gall of a Hawthorn Weevil. In May, 1829, we found on a hawthorn at Lee, inKent, the leaves at the extremity of a branch neatlyfolded up in a bundle, but not quite so closely as isusual in the case of leaf-rolling caterpillars. Onopening them up, there was no caterpillar to

Recherche dans la banque de photos par tags

• bookcentury1800
• bookidnaturalhistoryof01bos
• booksubjectinsects