. Animal mechanism: a treatise on terrestrial and aërial locomotion. Animal locomotion; Flight. ORGAN AND FUNCTION. 77 We might multiply indefinitely examples which prove the perfect harmony between the form of the muscles and the characters of their functions. Everywhere the transverse development of these organs is associated with strength, as in the triceps of the kangaroo, or the masseters of the lion •. Fig. 17.—Muscle of the thigh in the Magot; rectus internus muscle almost entirely formed of red fibres ; the attachments of this muscle being at a considerable distance from the knee, give


. Animal mechanism: a treatise on terrestrial and aërial locomotion. Animal locomotion; Flight. ORGAN AND FUNCTION. 77 We might multiply indefinitely examples which prove the perfect harmony between the form of the muscles and the characters of their functions. Everywhere the transverse development of these organs is associated with strength, as in the triceps of the kangaroo, or the masseters of the lion •. Fig. 17.—Muscle of the thigh in the Magot; rectus internus muscle almost entirely formed of red fibres ; the attachments of this muscle being at a considerable distance from the knee, give it a great extent of move- ment in bending the leg upon the thigh. Sartorius muscle, having a very short tendon. everywhere also, the length of muscle is connected with the extent of movement, as in the examples which we have just cited. Is this harmony pre-established, or rather is it formed under the influence of function in different creatures ? In the same manner as we see the muscles increase in volume by the habit of employing energetic efforts; we also observe them,. 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