. Animal physiology. Physiology, Comparative; Physiology, Comparative. Fig. 16.—Star Fish. opens into a stomach, which occupies the central disc, and sends prolongations into the rays. The nervous system is, in like manner, composed of a repetition of similar parts. A plan of it is seen in Fig. 17; where a shows the position of the mouth, which is surrounded by a ring or nervous cord, having five ganglia, cor- responding to the five arms. From each of these ganglia proceeds a branch along its arm, terminating in a little organ at its extremity, which is be- lieved to be an imperfectly develope
. Animal physiology. Physiology, Comparative; Physiology, Comparative. Fig. 16.—Star Fish. opens into a stomach, which occupies the central disc, and sends prolongations into the rays. The nervous system is, in like manner, composed of a repetition of similar parts. A plan of it is seen in Fig. 17; where a shows the position of the mouth, which is surrounded by a ring or nervous cord, having five ganglia, cor- responding to the five arms. From each of these ganglia proceeds a branch along its arm, terminating in a little organ at its extremity, which is be- lieved to be an imperfectly developed eye. No other organs of special sense can be detected in any of these animals; and it is only in a few that even these imperfect eyes can be discovered. All parts of their structure appear to be reduced to their greatest. Fig. 17.—Nervous System of 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 Carpenter, William Benjamin, 1813-1885. London : Wm. S. Orr and Co.
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