on the Production of Dephlogijlicated Air . j 2 1 
gidicated air in great abundance, I filled a globe, containing 
46 cubic inches, with this water, and putting to it two 
healthy peach leaves, expofed the globe in the fun upon the 
7th of September, from 1 1 o’clock in the morning till 2 o’clock 
in the afternoon ( 3 hours), when /- of a cubic inch of air was 
produced, which, proved with nitrous air, gave 1 a+yi— 1,52, 
or 248 degrees. 
A like globe, with frefh fpring water and two peach leaves, 
expofed at the fame time, furnifhed only L of a cubic inch of 
air, which, on account of the fmallnefs of its quantity, I did 
not fubmit to the ted; of nitrous air. 
Experiment N° 3 1 . 
September 8. Very fine clear weather, but rather cold for 
the feafon. Three equal globes, A, B, and C, containing each 
46 cubic inches, were filled as follows, and expofed in the fun 
from 9 o’clock in the morning till half an hour paft 4 in 
the afteriroon, when they were found to have produced air 
as under mentioned. 
The globe A, filled with water, which, by being previoufly 
expofed in the fun for feveral days, with potatoes cut in thin 
dices, had turned green, furnifhed -?%. of a cubic inch of air 
of 299 degrees, or ia + ^n= 1,01. N. B. This water, before 
it was put into the globe, was drained through two thicknedes 
of very fine Irifh linen. 
The globe B, filled with the fame green potatoe water 
(drained as before) to which were added four middling-fized 
peach leaves, furnifhed 2§ cubic inches of air of 320 degrees, 
or ia-\- 4.12 = 1,80. 
The globe C, filled with frefh fpring water, with four peach 
leaves, furnifhed -p- 4 - of a cubic inch of air of 151 degrees, or 
which, proved with nitrous air, gave ia-\-2n= 1,49. 
Vol. LXXVI 1 . K 
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