[29] L. Thudichum, Die chemische Constitution des Gehirns des Menschen und der Tiere (1901); see also H. Wittcoff, The Phosphatides (New York: Reinhold, 1951).
[30] William Crookes, British Association for the Advancement of Science, Reports (1887), sec. B, p. 573.
[31] J. E. Courtois and A. Lino, Progress in the Chemistry of Organic Natural Products, edit. L. Zechmeister (Vienna: Springer Verlag, 1961), vol. 19, p. 316-373.
[32] A. Wurt, Dictionnaire de Chimie, supp. part 2, [n.d.] p. 1087; A. Kossel, Zeitschrift für physiologische Chemie, series 3 (1879), p. 284.
[33] Alexander Todd, Les Prix Nobel en 1957 (Stockholm).
[34] Hans von Euler-Chelpin, Les Prix Nobel en 1929 (Stockholm).
[35] O. Meyerhof and E. Lundsgaard, Naturwissenschaften (Berlin, 1930), vol. 18, pp. 330, 787.
[36] K. Lohmann, Naturwissenschaften (Berlin, 1929), vol. 17, p. 624; C. H. Fiske and Y. Subbarow, Science (Washington, 1929), vol. 70, p. 381 f.
[37] J. Brachet, Scientia, Revista di Scienza (1960), vol. 95, p. 119.
[38] George de Hevesy, Les Prix Nobel en 1940 (Stockholm). See also Eduard Farber, Nobel Prize Winners in Chemistry, 2nd ed. (New York: Schuman, 1963), p. 179.