A synopsis of natural history : embracing the natural history of animals, with human and general animal physiology, botany, vegetable physiology, and geology / translated from the latest French edition of C. Lemmonnier, with additions from the works of Cuvier, Dumaril, Lacepede, etc., and arranged as a text book for schools by Thomas Wyatt.

Lemonnier, Céran

Date:: 1839

Credit: A synopsis of natural history : embracing the natural history of animals, with human and general animal physiology, botany, vegetable physiology, and geology / translated from the latest French edition of C. Lemmonnier, with additions from the works of Cuvier, Dumaril, Lacepede, etc., and arranged as a text book for schools by Thomas Wyatt. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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Genus I. Uoa, Lin. Under part of the tail and body furnished with a simple uninterrupted band of scales; body compressed ; two hooks near the extremity ; tail prehensile. Genus II. Coluber, Lin. Plates beneath the tail, arranged in pairs. Two subge- nera. The subgenus Python is of great size, and has hooks near the extremity ; the subgenus Coluber proper is of small size, has no hooks, and large plates upon the head. Section II. Venomous. A gland placed under the eye secretes a poison, and dis- charges it by a canal, whose extremity opens into a duct or gutter channelled in certain teeth of the upper jaw called movable fangs; the animal, at will, can conceal them in a fold of the gum; besides these there are, in the upper jaw, two ranges of palatine teeth. Two genera. Genus I. Crotalus, Lin. Rattles at the extremity of the tail, as many as seven or eight, very rarely ten. A small rounded pit behind each nostril. [America.] Genus II. Vipera, Daud. No rattles at the extremity of the tail nor rounded inden- tation behind each nostril. Two subgenera. Subgenus Viper proper. Small granulated scales on the top of the head. Subgenus Naia. Head furnished with plates; anterior limbs susceptible of being raised up and drawn forwards, so as to dilate this part of the body into a disk more or less broad. FAMILY III. NIJDA. Consist of a single genus. Ccecilia, Lin. So called because their eyes are so small as even to seem to be wanting; scales so small that the skin appears to be

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