Carbonic acid

Carbonaceous acid. Fixed air. Mephitic gas. Aerial acid. The name of cretaceous acid appears to agree best with this substance, because it is contained in very large quantities in chalk; and there is no other body with which it has so strong an affinity, as with lime, which composes the base of this earthy salt. The carbonic acid po e es all the more obvious qualities of air, and exists in the atmosphere, of which it is a small part. Atmospheric air. In 100 parts of atmospheric air there are 72 of azote, 27 of oxygene, and 1 of carbonic acid.