[49] Quoted from Wells, H. G., Jour. Infect. Diseases, 1908, v., 449.

[50] Ibid., 1911, ix., 147.

[51] Gay, F. P., and Robertson, T. B., Jour. Biol. Chem., 1912, xii., 233.

[52] Fitzgerald, J. G., and Leathes, J. B., Univ. Cal. Pub., 1912, “Pathology,” ii., 39.

[53] Bradley, H. C., and Sansum, W. D., Jour. Biol. Chem., 1914, xviii., 497.

[54] Reichert, E. T., and Brown, A. P., “The Differentia­tion and Specificity of Corresponding Proteins and other Vital Substances in Rela­tion to Biological Classifica­tion and Organic Evolu­tion.” Carnegie Institu­tion Publica­tion No. 116, Washington, 1909.

[55] Uhlenhuth, Das biologische Verfahren zur Erkennung und Unterscheidung von Menschen und Tierblut, Jena, 1905, p. 102.

[56] Moss, W. L., Johns Hopkins Hospital Bulletin, 1910, xxi., 62.

[57] Taylor, A. E., Jour. Biol. Chem., 1908, v., 311.

[58] Wells, H. G., Jour. Infect. Diseases, 1911, ix., 166.