340 



On the Quantity f Carlonic Acid Gas [Nov. 



ExPER. X. 



— Bar. 30-15, Ther. CO. 



OBSERVATIONS. 



Five min. after taking Jiss of diluted alcohol. 

 Five rain, after taking 5' 1 m «'' e ditto. 

 Five min. after taking 3'' more. 



This shows that even in small and divided 

 doses, which have been supposed to en- 

 sure the stimulant effects of alcohol, it 

 still acts by diminishing the quantity of 

 carbonic acid. 



Exper. XL 

 Sept. I.— Bar. 29-85, Ther. 61. 



'Twenty minutes after dinner and J pint wine. 

 Effects less than I had before experienced 

 ' after this quantity. 



Example of oscillatioR, 

 effects of food. 



Standard resumed. 



Perhaps also of 



EXPER. XII. 



Aug. 29.— Bar. 30-1, Ther. 60. 



Five min. after taking 3111 of Tery strong tea. 

 cold. 



I shall close this long essay with a few general observations, 

 and an account of the instrument employed in the experiments. 



Of the causes operating to produce the above variations, no 

 doubt the state of the circulation is to be considered as one. It 

 is impossible but to suppose that when, cceleris paribus, a greater 

 quantity of blood is exposed in a given time to the action of the 

 air, that a greater quantity of carbonic acid gas must be formed, 

 supposing this, at least, to be a common chemical process. It 

 must, I think, be admitted, therefore, that this cause contri- 



This will account for the effects produced by what would scarcely act at all on 

 one in the habit of taking larger quantities. Perhaps in these cases a bottle or 

 twu Yv«uld be accessary to produce similar effects. 



1 



