. The Biological bulletin. Biology; Zoology; Marine biology. 134 GEORGE FRED SUTHERLAND. 10 (six days' regeneration) shows the cells in one part of the cord stretched out to such an extent that vacuoles are left between the. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Fig. 12. Curve giving the number of mitotic divisions in that part of the spinal cord within 3 mm. of the edge. Beyond 3 mm. the mitoses are scattered. An abscissa represents the period of regeneration and the corresponding ordinate gives the average number of mitoses found in the individuals killed at the end of that period. cells. I
. The Biological bulletin. Biology; Zoology; Marine biology. 134 GEORGE FRED SUTHERLAND. 10 (six days' regeneration) shows the cells in one part of the cord stretched out to such an extent that vacuoles are left between the. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Fig. 12. Curve giving the number of mitotic divisions in that part of the spinal cord within 3 mm. of the edge. Beyond 3 mm. the mitoses are scattered. An abscissa represents the period of regeneration and the corresponding ordinate gives the average number of mitoses found in the individuals killed at the end of that period. cells. It is during the period from four to sixteen days that most of the increase in length takes place, by active proliferation and migration of cells. IV. Discussion. I. Amitosis and Fragmentation. Fraisse in describing the regulative process at about two days after the operation, says; "Bereits friiher machte ich darauf aufmerksam, dass am Wundrande eine starke Auswanderung von Leukocyten stattfindet, und dass diese es sind, welchen vor alien Dingen die Bildung des homogenen, lymphartigen Saumes, welcher zuerst die wunde bedeckt, zuzuschreiben ist. Das Riickenmark geht nun an meinen Schnitten bis dichte an diesen homogenen Saum heran, und die Elemente, welche es zusammen- setzen, lassen sich immerhin noch nach 24 Stunden auch an. 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 Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-; Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report; HighWire Press. Lancaster, Pa. [etc. ] : Lancaster Press, inc. [etc. ]
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