The common frog . rog tied where it cannot escape therays of a summers sun speedily dies—nay, more, issoon perfectly dried up—but its respiratory action isboth constant and important. This has been experi-mentally demonstrated by the detection of the car-bonic acid given out in water by a frog over the headof which a bladder had been so tightly tied as toprevent the possibility of the escape of any exhalationfrom the lungs. The fact of cutaneous respiration * See Elementary Physiology, Lesson V., § 19. F 66 THE COMMON FROG. [chap. has also been proved by the experiment of confiningfrogs in cag
The common frog . rog tied where it cannot escape therays of a summers sun speedily dies—nay, more, issoon perfectly dried up—but its respiratory action isboth constant and important. This has been experi-mentally demonstrated by the detection of the car-bonic acid given out in water by a frog over the headof which a bladder had been so tightly tied as toprevent the possibility of the escape of any exhalationfrom the lungs. The fact of cutaneous respiration * See Elementary Physiology, Lesson V., § 19. F 66 THE COMMON FROG. [chap. has also been proved by the experiment of confiningfrogs in cages under water for more than two monthsand a half, and by the cutting out of the lungs, the4creature continuing to live without them for fortydays. Indeed it is now certain that the skin is soimportant an agent in the frogs breathing that thelungs do not suffice for the maintenance of lifewithout its aid. It is no less true that in Batrachians which breatheby means of permanent gills—as, the Axolotl—.
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondo, bookyear1874
