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Show 2 How Smoking Injures Health. L. Laboratory work at the Paris Medi- ,r ral college Indicates that tobacco i, smoking does injure the heart, but r not, as generally supposed, on account of the nitotine present. Tobacco with f' various proportions of nicotine was used in the tests, anrt the effect on the n heart was the same. Oak leaves were n found to produce very much the same e result as tobacco, and the conclusion h reached was that the harmful effects are tlue to products of combustion cou- '" tained in smoke of widely different origin. |