To keep a room purified it is only necessary to keep a pitcher or some
other vessel full of water in it. The water will absorb all the respired
gases. The colder the water is the greater is its capacity to hold the
gases. At ordinary temperature a pail of water will absorb a pint of
carbonic acid gas and several pints of ammonia. The capacity is nearly
doubled by reducing the water to the temperature of ice. Water kept
awhile in a room is unfit for use. The pump should always be emptied
before catching water for use. Impure water is more injurious than
impure air.
* * * * *
Man, being essentially active, must find in activity his joy, as well as
his beauty and glory, and labor, like everything else that is good, is
its own reward.