. Animal mechanism: a treatise on terrestrial and aërial locomotion. Animal locomotion; Flight. ORGAN AND FUNCTION. 73 simple inspection of the sternum in different species; for this bone measures, in some degree, the length of the pectoral muscles which are lodged in its lateral cavities. Thus, birds with long wings, have a wide and short sternum ; the others have one which is long and Fig. 14. —Skeleton of a penguin : sternum very long-, wing very short. The comparison of homologous muscles in mammals of different kinds is not less instructive under the aspect in which we are now c
. Animal mechanism: a treatise on terrestrial and aërial locomotion. Animal locomotion; Flight. ORGAN AND FUNCTION. 73 simple inspection of the sternum in different species; for this bone measures, in some degree, the length of the pectoral muscles which are lodged in its lateral cavities. Thus, birds with long wings, have a wide and short sternum ; the others have one which is long and Fig. 14. —Skeleton of a penguin : sternum very long-, wing very short. The comparison of homologous muscles in mammals of different kinds is not less instructive under the aspect in which we are now considering them. But one is often em- barrassed in this comparison by the difficulty of recognizing the homology. The discrepancies are sometimes so striking. 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 Marey, Etienne-Jules, 1830-1904. New York, D. Appleton and co.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectflight, bookyear1874
