OOOOO

OOOOOO

OOOOOO

оооооо

a room must depend upon chance, and some rooms will get many times more than others and often those which require the most get the least. There should be a regulated supply, as each person in the space

of every minute requires a quantity of air double his own size. The FIGURE 21. plans for letting fresh air into rooms, as seen in Figure 21, are, to take out a pane of glass, and fix in its place bars of glass like a Venetian blind, as on the left side; or a plate of perforated zinc, costing a few pence, as in the middle, or a ventilator of it made to open and shut, which may be obtained at Mr. Stamper's zinc warehouse, 15, Quickset Row, New Road; or a pane of perforated glass, as seen on the right side, invented by Mr. Bowie, may be inserted; its price is at the rate of a penny a hole, and it can be obtained at 144, Strand. Even if none of these plans are adopted, the window should always be left a

b 3

a

little open at the top; a plan which is followed by a great number of persons at the present time, even during the night, who find no ill effects from the night air, but sleep soundly and comfortably, instead of heavily and restlessly, as they used to do.

25. Another plan for admitting fresh air into a room is, to take out a part of the upper panel of a door, and to fill up the space by perforated zinc, or to fasten a piece of wood on the inside, as in Figure 22, FIGURE 22.

so as to direct the air upwards.Those who do not wish to cut into the door may have the door of the room in which they sleep left slightly a-jar, and it can be guarded by a chain similar to that used in outer doors, which allows of the door being opened a few inches, but

not more, and which prevents any one outside from entering. This plan is very applicable to the bed-rooms of schools.

26. But in cold weather it is very important that warm air should be let into the room. This may be done by having a space, or air chamber

a

behind the fireplace, into which the air can enter by a pipe from the outside, and when it gets warm it is allowed to come into the room: this plan has been put in practice by Mr. Edwards, 20, Poland Street. In a school-room, or church, or any building with a stove, as in Figure 23, a pipe or channel, which may be made of wood or tin, should be brought from out of doors to the stove, where it should enter a case, made of brick or iron, surrounding the stove, and then the air, when warmed, can be allowed to pass into the room by the side

of the chimney. To make sitting-rooms warm in cold weather, a funnel should be placed over the fire, so as to prevent the large quantity of warm air going up the chimney, or a Warm air Cir

culator should be used. These are made by Mr. Edwards, 20, Poland Street, and Mr. Rein, of 110, Strand,

27. Let us now in Figure 24 look at a room which is well supplied with air, and in which the bad air is allowed to go away, one that is ventilated in a way that many persons have lately carried out, and which may be done at a very little

expense. Dr. Arnott's chimney valve, C.V, is placed in the chimney at the upper part of the room. A door

FIGURE 24.

perforated glass. It will be seen that in this room the people would have plenty of pure air to breathe, while in the room shown in Figure 15 the inmates would have to breathe very impure air.

28. In conclusion, let it be remembered that unless every sitting-room, bed-room, work-room, school, church, chapel, hospital-ward, or barrack-room has some special means for letting in fresh air as well as others for letting out bad air, it is quite certain that the men, women, and children who live in or frequent these places must sooner or later feel the ill effects in the shape of diseases of various kinds, affecting the body and the mind (varying from lowness of spirits to constant ill-health). It is hoped that those who read the suggestions contained in this little address will feel that, if they live in rooms where plans of Ventilation are not carried out, they neglect a leading duty, viz., the preservation of the health with which God has blessed them, and they must not repine should disease and its accompanying ills reduce them to a state of misery and depend