At any rate, the man or woman who demands cleanliness without and within, this cleanliness meaning pure air, pure water, pure food, must of necessity have a stronger body and therefore a clearer mind (both being nearer what God meant for body and mind) than the one who has cared little for law, and so lived oblivious to the consequences of breaking it.
Ventilation, seemingly the simplest and easiest of things to be accomplished, has thus far apparently defied architects and engineers.
Congress has spent a million in trying to give fresh air to the Senate and Representative Chambers, and will probably spend another before that is accomplished.

In capitols, churches, and public halls of every sort, the same story holds.

Women faint, men in courts of justice fall in apoplectic fits, or become victims of new and mysterious diseases, simply from the want of pure air.

A constant slow murder goes on in nurseries and schoolrooms; and white-faced, nerveless children grow into white-faced and nerveless men and women, as the price of this violated law.
What is this air, seemingly so hard to secure, so hard to hold as part of our daily life, without which we can not live, and which we yet contentedly poison nine times out of ten?
Oxygen, nitrogen, carbonic acid, and watery vapor; the last two being a small portion of the bulk, oxygen and nitrogen making up four-fifths.
Small as the proportion of oxygen seems, an increase of but one-fifth more would be destruction.

It is the life-giver, but undiluted would be the life-destroyer; and the three-fifths of nitrogen act as its diluent.