. Physiology, experimental and descriptive . GMENTCELLS ARTERYFig. 16. Part of Frogs Web (low magnifying power). CAPILLARY CIRCULATION. 53 The Circulation of Blood in the Web of a ProgsFoot. — For this get a frog with a pale web. Take a pieceof shingle six inches long and three inches wide. Cut around hole, half an inch in diameter, near one end of it. Walls of Capillaries Tissues of Web. Fig. 17. Part of Frogs Web (.highly magnified). 54 BLOOD CAPILLABIES. Wrap the frog in a wet cloth, with one leg projecting, andtie it, thus wrapped, to the shingle. Tie threads around twoof the toes, and str
. Physiology, experimental and descriptive . GMENTCELLS ARTERYFig. 16. Part of Frogs Web (low magnifying power). CAPILLARY CIRCULATION. 53 The Circulation of Blood in the Web of a ProgsFoot. — For this get a frog with a pale web. Take a pieceof shingle six inches long and three inches wide. Cut around hole, half an inch in diameter, near one end of it. Walls of Capillaries Tissues of Web. Fig. 17. Part of Frogs Web (.highly magnified). 54 BLOOD CAPILLABIES. Wrap the frog in a wet cloth, with one leg projecting, andtie it, thus wrapped, to the shingle. Tie threads around twoof the toes, and stretch the web, but not too tightly, over thehole. Place the shingle firmly on the stage of a first with a low power. The large tubes which growsmaller by subdivision are Arteries. The large tubes whichare formed by the union of smaller ones are the Veins. Thefiner tubes, forming a network in every direction, are theCapillaries. They receive the bloodfrom the arteries, and pass it on tothe veins. Put on a higher power, a one-fifthor one-sixth objective. It may nowbe seen that the colored corpusclesfloat more in the center of thestream, and with a steady motion,while the colorless corpuscles keepclose to the walls of the capillary,and seem to adhere to them, ad-vancing with a hesitant motion,seeming to roll along against thewall of the capillary. Close your eyes fo
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