Action of Tobacco Smoke 



345 



Exp, 1. A yo;ith aged 18 was placed in a chair in as comfortable a position 

 as possible, and a normal chart prepared for comparison with those in 

 which smoke was inhaled (see fig. 5, a). 



The following experiments show blood-pressure changes and pulse-rates 

 during smoking. 



Exp. 2. Youth aged 17^, an occasional smoker of cigarettes; normal blood- 

 pressure, from a series of observations, found to equal 117 mm. Hg 

 (systolic reading) ; pulse-rate 72. (See fig. 5, b.) 



