76 



Messrs. Parkes and Wollowicz on the 



[Recess, 



other cause influencing the heart's beats was exercise ; we kept the exer- 

 cise as uniform as we could, but there were variations, and we could often 

 trace defect or excess of exercise on the next reading of the pulse. The 

 daily mean of the pulse was fairly uniform, the mean of the 10 days 

 being 76*3 beats per minute, the extreme mean daily variation was from 

 74-2 to 77-87. 



Pulse during wine ; 10 ounces at 1 o 1 "clock during the first 5 days, and 

 20 ounces during the last 5. 











Hours. 









Mean of 



Days. 



































10 P.M 



the days. 





8 A.M. 



10 A.M. 



12 noon. 



2 P.M. 



4 P.M. 



6 P.M. 



8 P.M. 



11th day... 



67 



79 



76 



79 



80 



87 



80 



72 



77-5 



12th day... 



72 



71 



72 



85 



82 



90 



95 



82 



811 



13th day... 



76 



73 



70 



86 



84 



89 



80 



73 



78-8 



14th day... 



67 



82 



83 



92 



87 



89 



76 



78 



81-7 



15th day... 



70 



81 



77 



92 



88 



93 



84 



76 



82-6 



16th day... 



77 



80 



75 



76 



94 



86 



87 



76 



81-3 



17th day... 



74 



82 



75 



93 



88 



86 



80 



74 



81-5 



18th day... 



76 



75 



75 



94 



88 



91 



78 



69 



80-7 



19th day... 



76 



82 



69 



86 



96 



89 



82 



78 



82-2 



20th day... 



68 



86 



67 



85 



89 



81 



79 



71 



78-2 



Means 



j 72-3 



79-1 



73-9 



86-8 



87-6 



88-1 



82-1 



74-9 



80 5 



The wine increased the frequency of the heart's action by A\ beats 

 every minute during 14 hours in the day, and doubtless also in the re- 

 maining 10, for the pulse at 8 a.m. was still too frequent during the wine 

 period. In the 24 hours there was then an excess in the heart's action 

 of 6120 beats, or nearly 6 per cent. As the amount of alcohol was 1*1 

 ounces in the first 5 days, and 2*2 ounces in the other 5, the increase in 

 the number of the heart's beats was slightly more than in the days when 

 an equal quantity of pure alcohol was taken. 



This was partly owing to the continuance of the wine, as the first day's 

 excess was only 1658 beats, and partly to the fact that whereas in the 

 former series of experiments the mean pulse-beats in the water period 

 were 73", in this they were 76'3. The man's heart was evidently rather 

 more excitable in this series than in the former. 



When the hourly changes are compared with the water period, it is seen 

 that the influence of food is marked as before, but that the wine exag- 

 gerated the effect, and kept the pulse at a greater rate for a longer time. 



An extract from the Tables will show this. It must be noted that the 

 wine was taken at 1 o'clock, or a little after. 



Water period. Wine period. 



Mean number of pulse at 10 a.m. after breakfast . . 78 - 4 79*1 



Mean at 2 p.m. after dinner 83*7 86 8 



Mean at 4 p.m 75-8 87"6 



Mean at 6 p.m. after tea 78-8 881 



Mean at 8 p.m 76'6 821 



Mean at 10 p.m 71 3 74 9 



