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[40] 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; _A New Method for the
Determination of Nicotin in Tobacco_, U. S. Department of Agriculture,
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[41] Lehmann, K. B.: _Untersuchungen ueber das Tabakrauchen_, Munchen,
med. Wchnschr., 1908, LV, pp. 723-25; _The Physiological Action of
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[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,
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Nikotins) auf die Gefaesse 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,
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[51] Favarger, Heinrich: _Experimentelle und klinische Beitraege zur
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[52] Bangs, L. Bolton: _Some Observations on the Effects of Tobacco in
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[53] Cannon, Aub. Binger: _Effect of Nicotin Injection on Adrenal
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[54] Hare, Hobart