. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. HEAD REGENERATION IN THE EARTHWORM 467 4-8. The injured head region was then removed. After healing of the posterior incision through which the implant had been inserted, transection was made between the twelfth and thirteenth post-clitellar segments. The worm was fixed at the end of three and one-half months. Although well oriented with reference to adjacent parts, the pharynx does not open to the outside (Figs. 1 and 12). The nerve cord, turned toward the ventral body wall, reveals little or no growth activity at its anter
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. HEAD REGENERATION IN THE EARTHWORM 467 4-8. The injured head region was then removed. After healing of the posterior incision through which the implant had been inserted, transection was made between the twelfth and thirteenth post-clitellar segments. The worm was fixed at the end of three and one-half months. Although well oriented with reference to adjacent parts, the pharynx does not open to the outside (Figs. 1 and 12). The nerve cord, turned toward the ventral body wall, reveals little or no growth activity at its anterior end. In most of the other cases of this type the transection following the healing of the longitudinal incision was made in such a way as to remove the anterior third of the pharynx. It was felt that establishing a freshly cut surface of the pharynx as well as of the body wall would be more conducive to regeneration. In all cases, however, the wound- surface healed over smoothly and no regeneration occurred. •^^ggjf^^^^. £££i£i£i£^^. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
