. On mammalian descent. Being nine lectures delivered in the theatre of the Royal College of Surgeons during February, 1884. Mammals. 62 MAMMALIAN DESCENT. [Lect. Ill, sac, as in some Sharks, grow into more than a tem- porary union with the oviduct, or uterus, so as to derive nourishment from its walls. Hence the small size of the young of these creatures at birth, the food-yoUc being so soon exhausted, and no other pre-natal supply being at hand. Two newly-born young of the large Kangaroo {Mcbcropus major) sent to me by Dr Bennett of Sydney, were not so large as new-born Eats, , they were
. On mammalian descent. Being nine lectures delivered in the theatre of the Royal College of Surgeons during February, 1884. Mammals. 62 MAMMALIAN DESCENT. [Lect. Ill, sac, as in some Sharks, grow into more than a tem- porary union with the oviduct, or uterus, so as to derive nourishment from its walls. Hence the small size of the young of these creatures at birth, the food-yoUc being so soon exhausted, and no other pre-natal supply being at hand. Two newly-born young of the large Kangaroo {Mcbcropus major) sent to me by Dr Bennett of Sydney, were not so large as new-born Eats, , they were, about an inch long. Yet these small Kangaroos, whose. Fio. 8.—New-born young from the poucli of Kangaroo (Macropus Major), magnified 2| diameters. parents are the size of Sheep, like the sedentary Oyster "attend at ease moist nutriment," being attached to the teats, and there abiding. The embryo of the Marsupial is comparable in some degree to that of many fishes, in which the food-yolk is soon exhausted,.. 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 Parker, William Kitchen, 1823-1890. London, Griffin
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmammals, bookyear1885
