REFERENCES
Laucet. London, 1906. Vol. I, p. 984. The germ-destroying properties of tobacco.
Arnold, M. B. On the effects of the Exposure of Tobacco Smoke on the growth of pathogenic micro-organisms. Laucet. London, 1907. Vol. I, p. 1220.
Murray, J. C. Smoking; when injurious, when innocuous, when beneficial. London, 1871.
Lezars, I. The use and abuse of Tobacco. Philadelphia, 1883.
CHAPTER XIX
MISCELLANEOUS