But there really is a sensation of heat produced by the action of caustics.
EMILY.
If oxygen is so caustic, why does not that which is contained in the atmosphere burn us?
MRS. B.
Because it is in a gaseous state, and has a greater attraction for its electricity than for the hydrogen of our bodies. Besides, should the air be slightly caustic, we are in a great measure sheltered from its effects by the skin; you know how much a wound, however trifling, smarts on being exposed to it.
CAROLINE.
It is a curious idea, however, that we should live in a slow fire. But, if the air was caustic, would it not have an acrid taste?
MRS. B.
It possibly may have such a taste; though in so slight a degree, that custom has rendered it insensible.
CAROLINE.