nicotine to the smoke formed, while the pipe 

 yields a very large portion (in some cases be- 

 tween 70 and 80%) of its nicotine to the smoke. 

 Analysis of cigar smoke gives figures midway 

 between the two. 



With the results of Bush and the Lancet 

 before him the user of tobacco will be better 

 able to judge of the opinions of those who des- 

 cribe the effects of nicotine on the vision, heart, 

 digestive organs, etc., as likely to be the results 

 of tobacco smoking. 



Thus the disturbance of vision ascribed to 

 tobacco smoking is called tobacco amblyopia. 



Dr. W. S. Franklin of San Francisco (Calif. 

 State Jour, of Med., 1909, V. 7, p. 85), says 

 that to produce this disease it is necessary to 

 smoke daily from .75 to 1.0 gms. of pure nico- 

 tine. If 17% of the nicotine of tobacco is car- 

 ried in the smoke, in order to absorb that quan- 

 tity 7 or 8 cheap domestic cigars, 10 or 11 

 Cubans or 60 cigarettes should be smoked. Now 

 very few smokers consume this amount and ac- 

 cording to Bush, and the Lancet, and others 

 there is no such percentage of nicotine in the 

 smoke. 



To the use of tobacco is ascribed an acid 

 dyspepsia this, however, is noticed more par- 

 ticularly in habitual chewers and in this case 

 the nicotine not being burnt has no chance of 



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