. Beginners zoology. Zoology. and death from blood being withdrawn from brain. Al- ways two punctures, the closer together the smaller the snake. Remedies: Ligature between wound and heart, lance wound and suck; inject into wound three drops of i per cent solution of chromic acid or potassium perman- ganate. Give strychnine, hypodermically, until strychnine symptoms (twitchings) appear. No one but a physician should give strychnine. Digitalin or caffein acts like strychnine ; alcohol has opposite effect. Protective Coloration and Mimicry.—When an animal imitates the colour or form of its inaji
. Beginners zoology. Zoology. and death from blood being withdrawn from brain. Al- ways two punctures, the closer together the smaller the snake. Remedies: Ligature between wound and heart, lance wound and suck; inject into wound three drops of i per cent solution of chromic acid or potassium perman- ganate. Give strychnine, hypodermically, until strychnine symptoms (twitchings) appear. No one but a physician should give strychnine. Digitalin or caffein acts like strychnine ; alcohol has opposite effect. Protective Coloration and Mimicry.—When an animal imitates the colour or form of its inajiimate' snrroundings'it is said to be protectively Tssr-"""**^.^^^ ^W coloured or formed. Give an instance of protective Coloration or form a- mong lizards; butterflies; grasshoppers; amphi- bians; echinoderms. When an animal imitates the colour or the form of another animal it is said to mimic the animal. Mimicry usually enables an animal to deceive enemies into mistaking it for an ani- mal which for some reason they avoid. The milkweed butterfly has a taste that is repulsive to birds. The vice- roy butterfly is palatable to birds, but it is left untouched because of its close resemblance to the repulsive milkweed butterfly. The harlequin snake {Elaps) of the Gulf states is the most deadly snake of North America (Figs. 277, 278). It is very strikingly coloured with rings of scarlet, yellow, and black. This is an example of warning coloration. The scarlet snake {Lampropeltis) has bands of Fig. 276. —" Glass Snake," a lizard without legs. Fig. 277. —Skull of Elaps. See colored Fig- S-. Fig. 278. = Skull of 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 Coleman, Walter M. Toronto : Macmillan
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1921
