. The common frog. Frogs. VI. THE COMMON FROG. we find a structure very similar in form in animals remote enough from Batrachians, yet rarely do we find such in any intermediate kinds. Thus in certain tree-porcupines the ankle is furnished in like manner —another instance of the independent origin of strikingly similar Fig. 55- Fro. 56. Fig. 55.—Right foot of Emeu, a, astragalus; d^—^4, second, third, and fourth digits ; 711., metatarsals anchylosed together except at their distal ends ; t, tibia, ^2, distal tarsal element. Fig. 56.—Left foot of a Monitor Lizard (Varanus). f, fibu
. The common frog. Frogs. VI. THE COMMON FROG. we find a structure very similar in form in animals remote enough from Batrachians, yet rarely do we find such in any intermediate kinds. Thus in certain tree-porcupines the ankle is furnished in like manner —another instance of the independent origin of strikingly similar Fig. 55- Fro. 56. Fig. 55.—Right foot of Emeu, a, astragalus; d^—^4, second, third, and fourth digits ; 711., metatarsals anchylosed together except at their distal ends ; t, tibia, ^2, distal tarsal element. Fig. 56.—Left foot of a Monitor Lizard (Varanus). f, fibula; w^—w«5. the five metatarsals, ;«' being that of the hallux; /, tibia; i, astragalo-calcaneum; 2, cuboides ; 3, ecto-cuneiforme. There are other matters, however, more important than this. It has been remarked that the wrist shows an amount of resemblance to the same part in beasts which is wanting in most reptiles and in all 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 Mivart, St. George Jackson, 1827-1900. London, Macmillan and co.
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherlondo, bookyear1881
