. Animal physiology. Physiology, Comparative; Physiology, Comparative. Fig. 234.—Draco Volans. support in the air, are found in some members of all classes of air- breathing Yertebrata; but they are especially characteristic of the class of Birds, in which class the absence of them is the ex- ception to the general rule ; whilst in Mammalia and Reptiles, it is their presence which constitutes the exception. These wings are universally formed by some modification of the anterior extremities, which renders them unfit to be used as instruments of progression on the ground ; but the nature of this
. Animal physiology. Physiology, Comparative; Physiology, Comparative. Fig. 234.—Draco Volans. support in the air, are found in some members of all classes of air- breathing Yertebrata; but they are especially characteristic of the class of Birds, in which class the absence of them is the ex- ception to the general rule ; whilst in Mammalia and Reptiles, it is their presence which constitutes the exception. These wings are universally formed by some modification of the anterior extremities, which renders them unfit to be used as instruments of progression on the ground ; but the nature of this modifica-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carpenter, William Benjamin, 1813-1885. London : Wm. S. Orr and Co.
Size: 2462px × 1015px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorcarpenterwilliambenja, bookcentury1800, bookdecade1840
