ACID IN THE ATMOSPHERE. 15 
March 14th, 1829. 
EXPERIMENT. 3. 
Filled the bottle again with air at Corn- 
brook, and put in 1 oz. measure of lime water; 
5 oz. of which took 26.5 gr. measures of test acid 
to neutralize it, this air was only in 2 days, and 
agitated as before, when the lime water was 
taken out it took 3.5 gr. measures of test acid 
to neutralize it. 
This gives 3, by weight and 5, by volume. 
June 27th, 1829. 
EXPERIMENT 4. 
Filled the bottle again with air at Corn- 
brook, and put 4.80 gr. measures of lime 
water in; 5 oz. measures of which took 27 
gr. measures of test acid to neutralize it, 
this was in 3 days and frequently agitated; 
when taken out again 3.8 gr. measures of test 
acid neutralized it. 
This equals 3; by weight and ,,, by volume. 
