. Carnegie Institution of Washington publication. SPHvEROPLEA. 8l in the two varieties, as will be shown, the cleavage is not the same. In var. braunii the ring-like disposition of the protoplasm disappears, while large vacuoles appear, transforming the entire cell-contents into a foamy structure in which larger and smaller strands and masses alternate (Fig. 27, B). In the dense portions of protoplasm nuclei, as well as chromatophores and pyrenoids, are irregularly disposed. Now a cleavage takes place by which the plasmic contents are segmented into irregular protoplasts of varying sizes (Fig.

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. Carnegie Institution of Washington publication. SPHvEROPLEA. 8l in the two varieties, as will be shown, the cleavage is not the same. In var. braunii the ring-like disposition of the protoplasm disappears, while large vacuoles appear, transforming the entire cell-contents into a foamy structure in which larger and smaller strands and masses alternate (Fig. 27, B). In the dense portions of protoplasm nuclei, as well as chromatophores and pyrenoids, are irregularly disposed. Now a cleavage takes place by which the plasmic contents are segmented into irregular protoplasts of varying sizes (Fig. 27, C). These proto- plasts contract (the large vacuoles thereby gradually disappearing) and. A. 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington

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