American practice of surgery : a complete system of the science and art of surgery . Fig. 8.—Hydrophis Cyanocinta. Apoisonous salt-water snake, found in theChina Sea, near the Pliilippine the small head, pyramidal body,and flattened tail. 10 AMERICAN PRACTICE OF SURGERY. metres, but this wiJ depend upon the size and activity of the snake and uponwhether it has recently bitten. Chemically, snake venom contains severalbodies, the most important being a globulin and a peptone. The proportion ofthese two principles varies in the different varieties of snakes, the globulin con-stitutin
American practice of surgery : a complete system of the science and art of surgery . Fig. 8.—Hydrophis Cyanocinta. Apoisonous salt-water snake, found in theChina Sea, near the Pliilippine the small head, pyramidal body,and flattened tail. 10 AMERICAN PRACTICE OF SURGERY. metres, but this wiJ depend upon the size and activity of the snake and uponwhether it has recently bitten. Chemically, snake venom contains severalbodies, the most important being a globulin and a peptone. The proportion ofthese two principles varies in the different varieties of snakes, the globulin con-stituting about twenty-five per cent of the venom of the CrotaUcUv, while it ispresent in less than two per cent in the Najidos. The globulins have a more decided effect upon the blood-vessels, destroyingthe coagulability of the blood, causing the corpuscles to become spherical andto stick together, ami producing molecular changes in the capillary walls; this. Fig. 9.—The Diamond Rattlesnake (Crotalus adamanteus). latter change, together with the fluid condition of the blood, is the cause of thelocal and general extravasation, ecchymosis, and hemorrhage. The globulinsaccelerate the action of the heart, reduce the blood pressure, and act morepromptly on the respiratory centre to paralyze respiration. The local effect of the peptone is to produce rapid oedema, putrefaction, andsloughing without extravasation; constitutionally, it increases blood pressure,accelerates the respiration, and often causes convulsions. The effect produced also depends on other circumstances. Thus, for example,if the poison is introduced directly into a vein, its action may be immediatelyfatal: the effects are more severe in hot weather and when the snake is well fed,and they are also more severe in the breeding season; if the supply of venom POISONED WOUNDS. 11 has been recently exhausted by biting, the effect produced is of course muchless; the size of the snake
Size: 1889px × 1323px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbuckalbe, bookcentury1900, bookdecade1900, bookyear1906
