. Science from an easy chair; a second series. Science; Natural history. THE FROG'S TADPOLE igi frog finds it desirable to plunge into the water. He has now grown a pair of air-holding sacs for breathing (the lungs), opening from the gullet, whilst his gill-slits have entirely closed up and' disappeared. He moves quickly,. Fig. 39.—^The development of the frog's tadpole into a young frog. I, Very young tadpoles (twice the natural size) adhering by theif head suckers (comparable to those of the Ascidian, see Fig. 36) to the leaves of a water plant; 2 and 2a, the-same enlarged to show the extern
. Science from an easy chair; a second series. Science; Natural history. THE FROG'S TADPOLE igi frog finds it desirable to plunge into the water. He has now grown a pair of air-holding sacs for breathing (the lungs), opening from the gullet, whilst his gill-slits have entirely closed up and' disappeared. He moves quickly,. Fig. 39.—^The development of the frog's tadpole into a young frog. I, Very young tadpoles (twice the natural size) adhering by theif head suckers (comparable to those of the Ascidian, see Fig. 36) to the leaves of a water plant; 2 and 2a, the-same enlarged to show the external plume-like gills; 3 and 4, later stages ; ,5, the hind ]egs commencing to appear; 6, with both fore and hind legs; 7, the tail is withering and disappearing; 8, the young frog. ^nd with purpose; he catches small insects, little worms; and such like food, and is a creature of altogefher'«iiperior. 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 Lankester, E. Ray (Edwin Ray), Sir, 1847-1929. London, Methuen
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Keywords: ., bookcentury1900, bookdecade1920, books, booksubjectnaturalhistory
