. The Biological bulletin. Biology; Zoology; Marine biology. Fig. i. Diagram of horizontal section through testis (enlarged 20 diameters) showing arrangement of cysts in the lobes. Openings of vas deferens cut obliquely at a and b, longitudinally at c. Fig. 2. Early prophase of last spermatogonial division. Figs. 3, 4. Polar view of last spermatogonial metaphase. Figs. 5, 6. Side views of metaphase and of telophase (optical sections). FlGS. 7-10. Various stages in spireme formation ; appearance of plasmosome. Figs, ii, 12. Concentrated stage of spireme. Fig. 13. Height of spireme stage. Figs.
. The Biological bulletin. Biology; Zoology; Marine biology. Fig. i. Diagram of horizontal section through testis (enlarged 20 diameters) showing arrangement of cysts in the lobes. Openings of vas deferens cut obliquely at a and b, longitudinally at c. Fig. 2. Early prophase of last spermatogonial division. Figs. 3, 4. Polar view of last spermatogonial metaphase. Figs. 5, 6. Side views of metaphase and of telophase (optical sections). FlGS. 7-10. Various stages in spireme formation ; appearance of plasmosome. Figs, ii, 12. Concentrated stage of spireme. Fig. 13. Height of spireme stage. Figs. 14-16. Stages in breaking up of spireme. Fig. 19, a-e. Various views of plasmosome from nuclei similar to 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 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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