Worcester daily spy. [volume] (Worcester [Mass.]) 1850-1888, 1871-01-11

or what is better, by means of steam-pipe in the
air-chambcr, in place of the furnace; this sup
ply should be large, not only for health, but as
a matter Of economy.
Thus far, the children are provided with the
means of keeping the feet and body warm, and
are furnished with liberal supply of fresh air
at temperature that will maintain a comiorta-
bic state of the body. In order to remove the
air vitiated by respiration and by the exhala-
tons from the body, an opening should be left in
the plastering between each of the floor timbers,
and upon the back side of the room, IAN open
ing an inch and halfwidc,) through which the
air can pass to the floor of the school room
above, warming that as the cir in the basement
warns the one below. This hot air that is adj
mitted upon the back side of the room passes
along in contact with the floor, giving off its
heat ms il moves towards the front of the build
ing, where it is allowed to rise upwards between
the ceiling and the wall of the school room upon
the second floor. Here it also gives off more of
its heat to the wall and ceiling while on its way
to the attic, where it is permitted to escape by
ventilator or in any other feasible way.
The school rooms upon the second floor are to
be supplied with fresh warm air in the way
described for furnishing the first story, and the
manner of its escape TO be the same. By this
arrangement, the feet of the children are kept
warm. The warm air admitted for respiration
on the first floor gives off its heat to the floor of
the school room on the second story, also to the
outside wall of the building, thereby preventing
the air of the school room from losing its heat
by contact with the cold outside wall and then
falling upon those children who may be near it,
and chilling the feet of Others in its passage to-
wards the hot air as it comes into the room. To
prevent this cooling by contact with the win
dowS, they should be made double, By this
plan the feet are not only kept warm and the
head cool, but the heat is economical as much
as is possible consis ent with good ventilation,
and it is done without any additional expense
There is one other advantage which is not to
be overlooked. With known temperature out
side, the engineer with tue aid of the teachers,
could soon decide what the temperature of the
steam should be, to render the school rooms
comfortable. The amount of air supplied to
each school room, being constant quantity,
there would be no difficulty in giving them a
uniform temperature, whatever might be the
state of the weather outside.
The heating of the floors, so ef1ectually Sc
cured by this plan, prevents the accumulation
of any of the gases that are heavier than the
atmosphere. The heat of the floor rarilying
and rendering them lighter than the outside at
mosphere, they are always tending to find
their way out with the current of warm air
through the ceiling
With this mode of heating, every part Of the
room has an even temperature; result so very
desirable in a school room, and one which all of
the present modes Of heating so singularly fail
of accomplishing, II. G. DAVIS, NJ D.
WORCESTER, Jan. 10, 1871