. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 230 ROGER MILKMAN System Gelatinous test Ampulla. Blood vessel Zooid. FIGURE 1. Habit sketch of B. schlosscri on glass. generation of zooids is resorbed. Beginning with the oozooid, zooid size and pig- mentation increase in each of the first five or ten asexual generations. During this period, first functional sperm and finally mature eggs make their appearance. The buds are produced at specific sites on the atrial wall, one per zooid at first, and later up to four. The dependence of functional gonads upon a certain zooid si
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 230 ROGER MILKMAN System Gelatinous test Ampulla. Blood vessel Zooid. FIGURE 1. Habit sketch of B. schlosscri on glass. generation of zooids is resorbed. Beginning with the oozooid, zooid size and pig- mentation increase in each of the first five or ten asexual generations. During this period, first functional sperm and finally mature eggs make their appearance. The buds are produced at specific sites on the atrial wall, one per zooid at first, and later up to four. The dependence of functional gonads upon a certain zooid size sug- gested, and specific surgical experiments (Berrill, 1961) confirmed, that the degree of differentiation is dependent on mass in a manner reminiscent of the findings of Lopaschov (1935) and Grobstein and Zwilling (1953) in frog, chick, and mouse. Colonies under suboptimal conditions may mark time or even regress while the sequence of budding and resorption 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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