. The Biological bulletin. Biology; Zoology; Marine biology. 86 V. D. MARZA, E. V. MARZA AND M. J. GUTHRIE. 14 Explanation of Plate II Microphotographs 15 Fig. 12. Group of oocytes, showing variation in potassium content; method of Macallum. X 41. Oocyte 1 is in Period 1 and has a high potassium content Oocyte 2 is in Period 2 Bi; 3 is in Period 2 B2; and 4 is in Period 2 B3 (4 is about 1,200 microns in diameter). Note the decrease in potassium content in the yolk in oocytes 3 and 4. Fig. 13. Group of oocytes showing variation in total acid proteins; method of Unna, without chromolysis. X 17.
. The Biological bulletin. Biology; Zoology; Marine biology. 86 V. D. MARZA, E. V. MARZA AND M. J. GUTHRIE. 14 Explanation of Plate II Microphotographs 15 Fig. 12. Group of oocytes, showing variation in potassium content; method of Macallum. X 41. Oocyte 1 is in Period 1 and has a high potassium content Oocyte 2 is in Period 2 Bi; 3 is in Period 2 B2; and 4 is in Period 2 B3 (4 is about 1,200 microns in diameter). Note the decrease in potassium content in the yolk in oocytes 3 and 4. Fig. 13. Group of oocytes showing variation in total acid proteins; method of Unna, without chromolysis. X 17. Oocyte 1 is in Period 2 A, and gives an intense reaction in the cytoplasm; oocyte 2 is in Period 2 Bi; 3 is in Period 2 B2; and 4 is in Period 2 B3 with a central homogeneous mass of yolk (4 is about 1,200 microns in diameter). Note shift in reaction in yolk. Fig. 14. Group of oocytes showing variation in total acid proteins; method of Unna, without chromolysis. X 41. Oocytes 1, 2, and 3 are in Period 2 A, with numerous vesicles; and 4 is in Period 2 B2. Note shift in reaction in cytoplasm. Fig. is. Portion of oocyte early in Period 2 B2 showing variation in acid proteins; method of Unna, without chromolysis. X 204. Note larger hetero- geneous vesicles containing some intravesicular yolk and the much smaller globules of extravesicular 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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