Outlines of comparative anatomy : intended principally for the use of students / by Andrew Fyfe.

  • Fyfe, Andrew, 1754-1824.
Date:
1813
Catalogue details

Licence: Public Domain Mark

Credit: Outlines of comparative anatomy : intended principally for the use of students / by Andrew Fyfe. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    Cartilaginous Rings, though with some exceptions, as in the Crocodile, Chameleon, and Serpents, In these last, it has the appearance of being a complete pipe. The proportion of the Bronchi, compared to the Trachea, is as in Birds 5 but in Serpents^ there are large dilatations. In some of the Turtle and Crocodile kind, the Bron- chi form convolutions; and in some, the Trachea di* vides so soon, as to appear to be double. In most other Reptiles J the Bronchi are very short. For the most part, the Bronchi do not divide, and commonly do not enter into the substance of the Lungs, but terminate abruptly in them by one or more large orifices. The Lungs here, as in Birds, are in the same com» snon Cavity with the other Viscera, but vary more in shape and size than in the two former classes. They form most frequently two oval Sacs, which, in the Turtle kind, extend by the sides of the Spine, as far as the Pelvis, and above all the other Viscera. They dif- fer from those of Birds by the greater size of their Cells, and the looseness of their textureo In the Turtle, they are more complicated than in the rest of the individuals of this class, approaching more in their structure to the Lungs of Birds. The Branches of the Bronchi communicate, each by an orifice, with a particular Sac, the walls of which form Polygonal Cells, varying according to the kind of the Animal. In the Crocodile, the Cells are smaller than in the Turtle, In Lizards, Frogs, and Serpents, the Llmgs have, at their anterior part, a Cavity, the walls of which ar<3 Vol. IV. Q formed