( 33 ) 
APPENDIX. 
(Read November 16, 1810.) 
A 
As considerable time has elapsed since this 
paper was read (in 1806), and several im- 
portant memoirs have been published on sub-« 
jects nearly related to the present, the commit- 
tee has given me leave to make such addition- 
al observations as may be judged expedient. 
At the time of writing the preceding me- 
moir, I had not seen a judicious collection of 
facts and observations on respiration, by Dr. 
Bostock, published in 1804. From a careful 
comparison of the results of physiologists, at 
that period, he draws, amongst others, the 
following conclusions: 
1. Air loses near 4 per cent. in bulk of 
oxygen by being once respired; a man con- 
sumes about 2lbs. 8oz. in 24 hours, or 26 
cubic feet. 
2. The carbonic acid generated by. res- 
piration, is 82 for 100 oxygen in volume; 
and consequently, from the known constitu- 
tion of carbonic acid, it cannot contain all 
the oxygen which disappears. The weight 
E 
