rly those of the child, to remain long wet, in the room; of
smoking tobacco, using spirits, burning oil with too long a wick, &c.

All which has thus been said of the purity of the air of the nursery
generally, is applicable to that of all sleeping rooms. It is an
important point gained, when we can secure a nursery with folding doors
in the centre, so as, when we please, to make two rooms of it. In that
case, the division in which the bed is, can be completely ventilated a
little before night, and thus be comparatively pure for the reception of
both the mother and the child.

Shall the windows and doors where a child sleeps, be kept closed; or
shall they be suffered to remain open a part or the whole of the night?
This must be determined by circumstances. If there are no doors but
such as communicate with apartments whose air is equally impure with
that in which the child is, it is preferable to keep them closed. If the
windows cannot be opened without exposing the child to a current of air,
it is perhaps the less of two evils, not to open them.

But we are not usually driven to such extremities. In some instances,
windows are constructed--and all of them ought to be--so that they can
be lowered from the top. When this is not the case, something can be
placed before the window to break the current, so that it need not fall
directly upon the child. Closing the blinds will partially effect this,
where blinds exist.

I have known many an individual who was in the habit of sleeping with
his windows open during the whole year, and without any obvious evil
consequences. Dr. Gregory was of this habit. But if adults--not trained
to it--can acquire such a habit with impunity, with how much more safety
could children be trained to it from the very first year. Macnish says,
"there can be no doubt that a gentle current pervading our sleeping
apartments, is in the highest degree ESSENTIAL TO HEALTH."

This consideration--I mean the impurity of sleeping rooms, even after
every precaution has been used to keep them ventilated--affords one
of the strongest inducements to going abroad early in the morning
(especially when there is no other room which either adults or children
can occupy) while the nursery or chamber is aired and ventilated. The
utility of _rising_ early, I hope no one can doubt; but some have doubts
of the propriety of going abroad, till the dew has "passed away." Such
should be reminded, by the foregoing train of