. Animal mechanism: a treatise on terrestrial and aërial locomotion. Animal locomotion; Flight. 230 ANIMAL MECHANISM. the pectoral muscles, a small instrument is slipped, which is intended to show the dilatation of the muscles, and is constructed in the following manner : A little metal pan (fig. 93), containing within it a spiral spring, is closed by a membrane of india-rubber. This closed pan communicates with a tube transmitting Fig. 94.—Experiment to determine by the electrical and myographical methods, at the same time, the frequency of the movements of the wing and the relative dur
. Animal mechanism: a treatise on terrestrial and aërial locomotion. Animal locomotion; Flight. 230 ANIMAL MECHANISM. the pectoral muscles, a small instrument is slipped, which is intended to show the dilatation of the muscles, and is constructed in the following manner : A little metal pan (fig. 93), containing within it a spiral spring, is closed by a membrane of india-rubber. This closed pan communicates with a tube transmitting Fig. 94.—Experiment to determine by the electrical and myographical methods, at the same time, the frequency of the movements of the wing and the relative durations of its elevation and depression. Each pressure on the india-rubber membrane depresses it, and the spring gives way; the air is driven out of the pan, and escapes by the tube. When the pressure ceases, the air is returned to the instrument by the elasticity of the spring. 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
