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Titre : Philosophical transactions of the Royal society of London : giving some accompt of the present undertakings, studies, and labours of the ingenious in many considerable parts of the world. VOL114 (1824)
Auteur : Royal society (GB). Auteur du texte
Éditeur : Royal societyRoyal society (London)
Date d'édition : 1665-1886
Notice d'ensemble : http://catalogue.bnf.fr/ark:/12148/cb37571969b
Type : monographie imprimée
Langue : anglais
Format : Microfiches ; 105*148 mm
Description : Collection numérique : Nutrisco, bibliothèque numérique du Havre
Droits : conditions spécifiques d'utilisation - Microformes et reprints
Droits : restricted use
Identifiant : ark:/12148/bpt6k559193
Source : Bibliothèque nationale de France
Conservation numérique : Bibliothèque nationale de France
Date de mise en ligne : 10/03/2009
Le texte affiché peut comporter un certain nombre d'erreurs. En effet, le mode texte de ce document a été généré de façon automatique par un programme de reconnaissance optique de caractères (OCR). Le taux de reconnaissance estimé pour ce document est de 68%.
Below this is a regular line of ganglions, properly so calied, being made up of a congeries of nerves, as thé ganglions in the human body are now admitted to be.
The brain appears to be made up of two lobes. The mass I call medulla spinalis, is also made^up of two portions, united together by the two latéral ehords. ->
The ganglions down the body of the animal are united together by a double nerve. r
The annexed drawings show this structure better than can be explained by verbal description. Among the insect tribe the brain of the Humble Bee stands first, as^being largest in proportion to the size of the body of the insect. Swammehdam has given a representation of the Bee it is in general correct, but not-so in respect to the optic nerves.
The Moth and Caterpillar have the same kind of brain, medulla spinalis, and series of ganglions, as in the Bee: thé parts in the Caterpillar are nearly of the same size as in the Moth, but m both they are smaller than in the Bee. Swammerdam has given a correct représentation of thèse parts in thé Caterpillar of the Silk-worm, but none of the Moth, The Lobster is similar in the structure of ail these parts to the Bee, and although they are smaller in proportion to the size of the animal, they are still so large as to be readily seen, and explain what is not so distinct in the smalier insects. The Earth-worm bas a brain and nerves formed upon a smaller scale, but made upof the same parts.
In the Garden Snail, the brain and medulla spinalis are upon the whole larger in proportîon to the sizb of the animal than in the Bee but in this animal, there are no ganglions, which may account for those parts being so large.