An introduction to the study of the comparative anatomy of animals . Fig. 4. A, Femur of the Frog. /, proximal; d, distal articulating surfaces; s,shaft. By Tibio-fibula, seen from below. ^, proximal ; d, distalarticulating surfaces; t, tibial half of the bone separated by a groovefromy^ the fibular half C, The right ankle and foot of the Frog, seenfrom below. This figure is drawn to a smaller scale than A and , astragalus ; c^ calcaneum ; /—V, the five principal digits ; X, theminute accessory digit. (All the figures after Ecker.) phalanges of the toes. The first and second toes have twoph
An introduction to the study of the comparative anatomy of animals . Fig. 4. A, Femur of the Frog. /, proximal; d, distal articulating surfaces; s,shaft. By Tibio-fibula, seen from below. ^, proximal ; d, distalarticulating surfaces; t, tibial half of the bone separated by a groovefromy^ the fibular half C, The right ankle and foot of the Frog, seenfrom below. This figure is drawn to a smaller scale than A and , astragalus ; c^ calcaneum ; /—V, the five principal digits ; X, theminute accessory digit. (All the figures after Ecker.) phalanges of the toes. The first and second toes have twophalanges, the third three, the fourth four, and the fifth three. It is obvious that the fore and hind limbs are built onessentially the same plan. The humerus of the arm has itsanalogue in the femur of the leg. The radius and ulna arerepresented respectively by the tibia and fibula in the wrist corresponds to the ankle, and the bones of handand foot are very similar. Paired structures, which arerepeated in this way, are said to be serially homologous, but
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondo, bookyear1900
