. Human physiology. ection of which tends towards thepoints of irritation. But although a part of the apparatus of inter- Galen. Administrat. Anatom,, vi. 2. CIRCULATORY APPARATUS, 345 mediate circulation may be arranged, inthis manner, there are reasons for thebelief, that a more direct communicationbetween the arteries and veins exists substance of an injection passes fromone set of vessels into the other, withoutany evidence of intermediate extravasa-tion. The blood has been seen, too, pass-ing in living animals, directly from thearteries into the veins. Leeuenhoek^ andMalpighi,^ o


. Human physiology. ection of which tends towards thepoints of irritation. But although a part of the apparatus of inter- Galen. Administrat. Anatom,, vi. 2. CIRCULATORY APPARATUS, 345 mediate circulation may be arranged, inthis manner, there are reasons for thebelief, that a more direct communicationbetween the arteries and veins exists substance of an injection passes fromone set of vessels into the other, withoutany evidence of intermediate extravasa-tion. The blood has been seen, too, pass-ing in living animals, directly from thearteries into the veins. Leeuenhoek^ andMalpighi,^ on examining the swim-blad-ders, gills, and tails of fishes, the mesen-tery of frogs, &c.—which are transpa-rent,—observed this distinctly; and the fact has been proved by the observations Portion of the Web of the Frogs Foot. of Cowper, Cheselden, Hales, Spallan- ^^{.^ ^Z^^:i^;7:i^;X^ Zani, TllOmSOn, Cuvier, Configliachi, RUS- communicate, c, c. The angular unnu- coni, Dcillinger, Cams, and others. Fig. cleated cells of the paienchyma.


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Keywords: ., bookauthordungliso, bookcentury1800, bookdecade1850, bookyear1856