. Outlines of zoology. Zoology. STRUCTURE OP THE EARTHWORM. 193 of the nerve cord, another (infra-neural) along the under surface, while two small lateral-neurals pass along each side of this same cord. All these longitudinal vessels, of which the first three are most important, are parallel with one another ; the first three meet in an anterior network on the pharynx ; the dorsal and the supra-neural are linked together in the region of the gullet by five or six pairs of contractile vessels or "; The precise path of the blood is not. Fig. 61.—Transverse section of Earthworm.
. Outlines of zoology. Zoology. STRUCTURE OP THE EARTHWORM. 193 of the nerve cord, another (infra-neural) along the under surface, while two small lateral-neurals pass along each side of this same cord. All these longitudinal vessels, of which the first three are most important, are parallel with one another ; the first three meet in an anterior network on the pharynx ; the dorsal and the supra-neural are linked together in the region of the gullet by five or six pairs of contractile vessels or "; The precise path of the blood is not. Fig. 61.—Transverse section of Earthworm. (After CLAPARfeDE.) c, Cuticle ; e., epidermis: cm., circular muscles; , longi- tudinal muscles ; j.,aseta; cce., coelome ; jj/.,;., yellow cells ; 7'., typhlosole; v.'j., ventral blood vessel; , sub-neural vessel below nerve cord ; , dorsal vessel. known, but the distribution of vessels to skin, nephridia, and alimentary canal is readily seen. Respiration is effected by the distribution of blood on the general surface of the skin. 13. 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 Thomson, J. Arthur (John Arthur), 1861-1933; Newbigin, Marion I. (Marion Isabel), 1869-1934; Smith, Preserved, 1880-1941. fmo. New York, D. Appleton & Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
