being decomposed. All writers have agreed that 

 chewing is the worst way that tobacco can be 

 used. Dr. R. V. Dolbey says: (Northwest 

 Medicine, 1909, V. 1 p. 99). 



"In chewing, quantities of watery extract of 

 tobacco are swallowed and taken down with 

 the food containing a large percentage of nico- 

 tine and causing severe dyspepsia. While to- 

 bacco juice solution in the laboratory kills in- 

 testinal bacteria, excessive tobacco chewing 

 does not have this effect on the human body 

 owing to the fact that the gastric and pan- 

 creatic juices act on it and alter it." 



Dr. I. S. Gilfilian discusses the effects of to- 

 bacco on the heart in the St. Paul Medical 

 Journal, July, 1912, p. 338. He says that the 

 important part whether organic changes in the 

 cardio-vascular system may be produced by 

 tobacco is still doubtful, and that it has never 

 been shown that smokers suffer more from or- 

 ganic heart disease than nonsmokers. 



General opinion is that smoking lessens the 

 pulse rate and slightly increases the blood pres- 

 sure, and that it is a cause of arterio-sclerosis. 



With regard to arterio-sclerosis, Dr. A. Lor- 

 and of Carlsbad who is a world-wide authority 

 on the effects of toxic substances on the blood, 

 says in his book, Old Age Deferred (English 

 translation, 1910, p. 367) : 



188 



