. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. N. J. BERRILL. FIG. 4. Development of buds of advanced colony, as illustrated in Fig. 1, B. A, a bud at approximately same stage as in Fig. 3, D, bearing in turn a bud of the succeeding generation, arising as a convex thickening disc of the right an- terior atrial wall. B, C, later stages in formation of bud shown appearing in A, showing forma- tion of closed vesicle and residual area of disc. D, three stages, a development of the larger zooid shown in A, its first bud now a closed vesicle with a developing ampullary vessel,
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. N. J. BERRILL. FIG. 4. Development of buds of advanced colony, as illustrated in Fig. 1, B. A, a bud at approximately same stage as in Fig. 3, D, bearing in turn a bud of the succeeding generation, arising as a convex thickening disc of the right an- terior atrial wall. B, C, later stages in formation of bud shown appearing in A, showing forma- tion of closed vesicle and residual area of disc. D, three stages, a development of the larger zooid shown in A, its first bud now a closed vesicle with a developing ampullary vessel, and a residual disc repre- senting the first stage in bud development. E, more advanced stage, with residual disc forming second vesicle and further residual area; first bud has acquired attachment to colonial circulatory system by its ampullary vessel and is completely separated from its parental bud. of, atrial folds; as, atrial sac; ats, atrial siphon; blt b2, first and second buds arising from larger bud shown in A; bs, branchial siphon; hi, heart; nv, neural vesicle; st, stomach; pc, pharyngeal chamber; v, ampullary 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
