[41] Lehmann, K. B.: Untersuchungen über das Tabakrauchen, Munchen, med. Wchnschr., 1908, LV, pp. 723–25; The Physiological Action of Tobacco Smoke, Med. Rec., 1908, LXXIII, pp. 738, 739.
[42] The Toxic Factor in Tobacco, The Lancet (London), 1912, II, pp. 944–947.
[43] Garner, W. W.: The Relation of Nicotin to the Burning Quality of Tobacco, U. S. Department of Agriculture, Bureau of Plant Industry, Bulletin No. 141, Sept. 30, 1909, p. 15.
[44] Zhebrovsky, E. A.: The Effect of Tobacco Smoke upon the Blood Vessels of Animals, Russky Vratch, 1907, VI, p. 189; 1908, VII, pp. 429–431; Med. Rec, 1908, LXXXIV, pp. 408, 409.
[45] John, H.: Editorial, Jour. A. M. A., 1914, LXII, pp. 461–2; Ueber die Beeinflussung des systolischen und diastolischen Blutdrucks durch Tabakrauchen, Ztschr. f. exper. Path. u. Therap., 1913, XIV, pp. 352–365; Pawinski, J.: Ueber den Einfluss unmassigen Rauchens (des Nikotins) auf die Gefässe und das Herz, Ztsch. f. klin. Med., Berl., 1914, LXXX, pp. 284–305.
[46] Pack, Frederick J.: Smoking and Football Men, Popular Science Monthly, 1912, LXXXI, p. 336.
[47] Fisher, George J. [Monograph not yet published.]
[48] Bush, Arthur D.: Tobacco Smoking and Mental Efficiency, N. Y. Med. Jour., 1914, XCIX, pp. 519, 529.
[49] Mayo, Wm. J.: Personal communication.
[50] Dwight, Edwin Wells: Proc. Assoc. Life Ins. Med. Dir., Oct., 1911, II, p. 474.