. Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. Fig. 7. vary in different genera and even species. In NepJielis and some species of Clepsine several large vacuoles {v) lie in the centre of the cell and even flow together in different places. The periphery of the cell is crowded with smaller vacuoles (7^), which also flow together in vari- ous directions, thus form- ing an irregular network of canals (Fig. 8). In other species of Clepsine (biocu- lata, nepheloidea, parasita, Hollensis) we notice a very peculiar structure. The centre of the cell
. Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. Fig. 7. vary in different genera and even species. In NepJielis and some species of Clepsine several large vacuoles {v) lie in the centre of the cell and even flow together in different places. The periphery of the cell is crowded with smaller vacuoles (7^), which also flow together in vari- ous directions, thus form- ing an irregular network of canals (Fig. 8). In other species of Clepsine (biocu- lata, nepheloidea, parasita, Hollensis) we notice a very peculiar structure. The centre of the cell is occupied by a dense, irregularly shaped mass (^m), which stains deeper than the surrounding cyto- plasm. Under a very high magnification this mass shows itself to be com- posed of innumerable very small vacuoles closely pressed together and with little granules in the cen- tre (Fig. 9). I attribute the deeper stain of this mass to the fact that the cytoplasmic threads are closely wedged in between these vacuoles. In the cells next to these we notice that the vacuoles of Fig. 9. this mass flow together m rows and plates, and that even the central masses of two neighboring cells unite (Fig. 10).. Fig. 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. ). Boston, Ginn & Co
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