Quantity of Heat evolved from Atmospheric Air. 221 
it cannot be expected a few experiments should be deemed sufli- 
cient to settle them with mathematical precision ; yet, we cannot 
err on the side of too great a quantity in assuming that fully 5¢° 
is the action of the aforementioned quantity of air, condense 
double its density, eS its atmospheric condition, upon the speci- 
fied quantity of wate 
TABLE III. 
Experiments made in New Orleans. 
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