Year: 1869

that ventilation cannot be eftecteu III
cold weather without loss of artifici.
al heat, and that heat cannot be pro
duced by any known method without
iDcurring expense, we should soon find
a way to effect ventilation Bat it is


just at this point that the subjects OF
heating and ventilating hold together,
and heating makes itself an aid to ven
tilation by assisting to create the nee
essary currents, and also . handrapee.
because the waste of it initiates against
our Yankee ideas of economy. But,
if we are ready to believe, as has been
stated upon good authority, that zone
half of the human family die of dis
eases that are the result, directly OF
indirectly, of breathing impure air.


.t,is 1--~.inn nf financial econemy
dwindles into nothing. For it bears
no weight in tho scale against ever
clearness Of mental perception, to say
nothing Of health. What value car
either money or learning possess, il
the system is wrecked and health un
dermined.


4 few years ago, no one thought OF
getting rid of the foul air in any way
but by taking it from the top of the
room, because heated air, not naturally,
but as result of the pressure of cold
air, rises. 1t was forgotten here that
the heated air, which comes in contact
with the glass of the windows and
the walls of the room is cooled and
decends to the floor again, bringing
with 1t the impurities it has received
from the lungs, tie clothing and bodies
of the inmates; and thus it comes that
we often find an open ventilator in
the ceiling, and state of atmosphere
in the room, perfectly sickening to one
coming in from the open air. l have
seen this state OF things, on still days
in the summer, wher windows " ere
lowered from the top and doors
closed. When this defect was dis
covered, there followed another ey


treme, that OF ventilating at the floor
only. This, also, was defective, as the
ercess of iouI air is at the top of the
room during the greater portion OF
the year Besides, If enough of the
yitiated air would come to the floor,
to effect the purposes Of ventilation, it
would still be difficult to carry out
the operation with safety to the inmates
of the room, because it is useless to
make an outlet for the air without a
corresponding inlet, and to pass cold
air over the feet OF the pupils in cur
rent sufficient to vcntilatc the room,
is highly mprudeut. 1t, therefore,
seems TO me, that a distribution of the
outlets of foul air and the islets oil
fresh ali is of the utmost Importance
However. many maintain that what
shall call floor, or low, ventilation is


success; but have not yet realized i
| myself, and, of course, could not ven
ture to recommend it. l; has th,
recommendation of so many gool
men, that l must admit it worth,
of a careful examination by all who
have anything to do with the ventila
ton of school houses. For anything


that promises to improve the present


mixed and utter want OF ventilation


even to the tearing Oft of the roof i
we'll worth careful consideration.


The lowering of windows is o
doubtful utility, or at least, cannot b.
depended upon as means of ventila1
ing throughout the year. They arc
too often left closed when they arc
our main dependence,-till the unatu


raj and harmful condltion,-hot heads
and cold feet,-arises; then they are
pulled down, and stream of cold all
falls upon the heads and shoulders
OF the pupils, who, but moment ago
were uncomfortably warm. II we are
to make any use of windows for ven
tilating, in winter time, prefer that
doors be provided with pivot tran
SONS, which can swing open, and the
foul air escaping from the room
through them will serve to raise the
temperature in the halls and cloak


rooms, while any admitted air will be
i'll less severe blasts upon the school
No outside door should open directly
into the scho ol-room, but always into
hall, wardrobe or ante-room.


In no case, however, are we to depend
upon such appliances as these for the
entire ventilation of the room. They
are always to be supplied, it is true,
but only as al assistant to the VENT.
lating tiues when they fail to carry off
all the foul air, or where the require
ments of ventilation are too great for
their capacity. There are seasons
when they serve purpose that no
other arrangement can except the ap-
paratus tor forced ventilation.


Perhaps one of the best and most
reliable modes of ventilation, where
expense is not a consideration Of too
great Importance, is the application OF
force to drive the air through coils Of