An Elementary Course In Practical Zoölogy

Paperback | July 8, 2012

byBuel Preston Colton

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 edition. Excerpt: ...the lower end of the muscle; now pinch the upper end of the sciatic nerve, meanwhile closely watching the muscle. THE FROG'S SKELETON. Clean the skeleton of the frog after dissection. This is easier after soaking it in water for a few days. 1. Note how open and light the skull is, and how easily the bones are cut. 2. Count the parts of the spinal column; these are the vertebrae. The long bone terminating the spinal column is the urostyle. 3. Observe the long bones of the pelvis, parallel with the urostyle. What makes the frog hump-backed? 4. The fore limb has, in the upper-arm, the humerus; in the forearm the radius (same side as the thumb) and the ulna; in the wrist are several small bones, the whole collectively called the carpus; in the hand are the digits. 5. The hind limb has, in the thigh, the femur; in the leg, a bone which shows, by grooves near its ends, that it is formed by the union of two bones corresponding to the tibia and fibula of man; the several small bones of the ankle are together called the tarsus; the bones of the toes are the digits, 6. Are there auy ribs? THE DEVELOPMENT OP THE FROG. By wading into a pond where there are frogs, in the spring, one can usually see how the eggs are laid. If these eggs are watched, they will be seen to produce tadpoles; the tadpoles may be reared; at first the form is fish-like, not only in external form, but in the fact that the tadpole has no lungs, but breathes by gills. An opening may be seen on one side, through which water leaves the gills. Later, the lungs develop, and the gills disappear. How do the gills of a tadpole compare with those of a fish? Is the tadpole a fish? Put a small tadpole in a watch crystal containing water; examine the gills under a one-inch objective to see the...

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 edition. Excerpt: ...the lower end of the muscle; now pinch the upper end of the sciatic nerve, meanwhile closely watching the muscle. THE F...

Format:PaperbackDimensions:54 pages, 9.69 × 7.44 × 0.11 inPublished:July 8, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217810179

ISBN - 13:9780217810173

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