. The elementary nervous system. Nervous system; Nervous system -- Coelenterata. INDEPENDENT EFFECTOES 57 the attention of investigators for many years. The organ itself is in the form of a swollen tube, one end of which is continuous with the blood-vessels distributed to the vis- cera and the other with those distributed to the gills (Fig. 14). The action of the heart, the reversal of which. 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
. The elementary nervous system. Nervous system; Nervous system -- Coelenterata. INDEPENDENT EFFECTOES 57 the attention of investigators for many years. The organ itself is in the form of a swollen tube, one end of which is continuous with the blood-vessels distributed to the vis- cera and the other with those distributed to the gills (Fig. 14). The action of the heart, the reversal of which. 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 Parker, George Howard, 1864-1955. Philadelphia, London J. B. Lippincott Company
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