ACID IN THE ATMOSPHERE. 17 
July 3ist, 1830. 
EXPERIMENT 7. 
Filled the above bottle again with air from 
the field, as in experiment 5th, and put 1000 
gr. measures of lime water in; 1000 gr. mea- 
sures of: this lime water before going in, took 11 
gr. measures of test acid to neutralize it, and 
when taken out again after being in 6 days, and 
well agitated, it took 8.3 gr. measures of test 
acid to neutralize it. 
This equals a by weight and oa by volume. 
August 17th, 1830. 
EXPERIMENT 8. 
Filled the bottle again with air taken at Corn- 
brook, 500 gr. measures of lime water were put 
in; 500 gr. measures of this lime water before 
going into the bottle took 4.7 gr. measures of 
test acid to neutralize it, and after being in the 
bottle 8 days it took 2.2 gr. measures of test 
acid to neutralize it. 
This equals 2, by weight and ,;, by volume. 
B 
