. Comparative zoology, structural and systematic : for use in schools and colleges. Zoology; Anatomy, Comparative; Physiology, Comparative. THE NERVOUS SYSTEM. 177. Fig. 147.—Antennae of Various Insects. ter, the edge of the mantle is most sensitive; in Fishes, the lips; in Snakes, the tongue; in Birds, the beak and under side of the toes; in Quadrupeds, the lips and tongue; and in Monkeys and Man, the lips and the tips of the tongue and fin- gers. In the most sensitive parts of Birds and Mam- mals, the true skin is raised up into multitudes of mi- nute elevations, called pa- pillce, containin
. Comparative zoology, structural and systematic : for use in schools and colleges. Zoology; Anatomy, Comparative; Physiology, Comparative. THE NERVOUS SYSTEM. 177. Fig. 147.—Antennae of Various Insects. ter, the edge of the mantle is most sensitive; in Fishes, the lips; in Snakes, the tongue; in Birds, the beak and under side of the toes; in Quadrupeds, the lips and tongue; and in Monkeys and Man, the lips and the tips of the tongue and fin- gers. In the most sensitive parts of Birds and Mam- mals, the true skin is raised up into multitudes of mi- nute elevations, called pa- pillce, containing loops of capillaries and nerve-filaments. There is a correspondence between the delicacy of touch and the development of in- telligence. The Cat and Dog are more sagacious than hoofed animals. The Elephant and Parrot are remark- ably intelligent, and are as celebrated for their tactual power. Taste is more refined than touch, since it gives a knowledge of properties which cannot be felt. It is al- ways placed at the entrance to the digestive canal, as its chief purpose is to guide animals in their choice of food. No special organ of taste can be de- tected in the Invertebrates, although all seem to exercise a faculty in se- lecting their food. Even in Fishes, Amphibians, Reptiles, and Birds this Fig. 148.—Papillae of Human r 1 Palm, x 35, the cuticle be- sense is very obtuse, for they bolt their food. But the higher Verte- brates have it well developed. It is confined to the tongue, and is most delicate at the A state of solution and an actual contact of the fluid are necessary conditions. Smell is the perception of odors, i. e., certain substances 12. 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 Orton, James, 1830-1877; Birge, E. A. (Edward Asahel), 1851-1950. New York : Harper & Bros.
Size: 1611px × 1551px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1883
