. The Biological bulletin. Biology; Zoology; Marine biology. Fig. 1.—Immature eggs. Fig. 2.—Mature eggs. and sperm added about fifteen minutes later. At the end of two hours, maturation in most of the cases, was completed. Eighteen hours later the following results were obtained : Table I. Solution. Length of Treatment with Alkaline Sea Water. 1 Hour. Hours. 2 Hours. 3 Hours. 50 sea water 10 % mature. 15 % mature. 40 % mature. 40 % mature. -+- .4 n/io I swimming All swimming. 10 fc swim- 5 % swimming. NaHO. larva. ming. Rest disinte- Some disinte- Rest disinte- grating. grated eg
. The Biological bulletin. Biology; Zoology; Marine biology. Fig. 1.—Immature eggs. Fig. 2.—Mature eggs. and sperm added about fifteen minutes later. At the end of two hours, maturation in most of the cases, was completed. Eighteen hours later the following results were obtained : Table I. Solution. Length of Treatment with Alkaline Sea Water. 1 Hour. Hours. 2 Hours. 3 Hours. 50 sea water 10 % mature. 15 % mature. 40 % mature. 40 % mature. -+- .4 n/io I swimming All swimming. 10 fc swim- 5 % swimming. NaHO. larva. ming. Rest disinte- Some disinte- Rest disinte- grating. grated eggs. grating. 50 sea water 30 % mature. 50 f0 mature. 70 <f0 mature. 90 % mature -)- .7 «/io 15 % larvae. 40 % swim- and swim- and swim- NaHO. Few disinte- ming. ming. ming. grating. 40 f0 irregular. IO % disinte- grating. 50 sea water 40 Jo mature. 90 % mature 90 f0 swim- 98 % mature + 1 njio All swimming. and swim- ming. and swim- NaHO. ming. Few disinte- grating. 40 % irregular. ming. 10 % disinte- grating. 50 sea water All mature and 98 fo mature 95 % mature 95 % swim- + 1-5 «/10 swimming. and swim- and swim- ming. NaHO. Fine larvse. ming. ming. 5 % disinte- Few disinte- 20 % irregular. grating. grating. Disintegration. From the table we see that the greatest number of the eggs become mature and form larvse when njio NaHO are added to 50 sea water, and the eggs subjected to this mix-. 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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