[98] Loeb, J., and Wasteneys, H., Jour. Biol. Chem., 1913, xiv., 517; Biochem. Ztschr., 1913, lvi., 295.

[99] Loeb, J., Biochem. Ztschr., 1906, ii., 81.

[100] Loeb, J., Arch. f. d. ges. Physiol., 1906, cxiii., 487; Biochem. Ztschr., 1910, xxvi., 279, 289; xxvii., 304; xxix., 80; Arch. f. Entwcklngsmech., 1914, xl., 322.

[101] Herlant, M., Arch. de Biol., 1913, xxviii., 505.

[102] It is also important to remember that the forma­tion of astrospheres after mere membrane forma­tion occurs considerably more slowly than if the egg has also received a treatment with a hypertonic solu­tion.

[103] The writer found that the eggs of Fundulus will segment a number of times even if all the oxygen has apparently been removed.

[104] Loeb, J., Biochem. Ztschr., 1906, ii., 183.

[105] Thus the treatment of an unfertilized egg without membrane with a hypertonic solu­tion combines two effects, first the general cytolytic altera­tion of the cortical layer of the membrane and the corrective effect of the hypertonic solu­tion. The former effect raises the rate of oxida­tions in the egg, the latter does not.

[106] Warburg, O., Sitzungsber. d. Heidelberger Akad. d. Wissnsch., B. 1914.

[107] Loeb, J., Biochem. Ztschr., 1906, ii., 87.