Ellsworth American. [volume] (Ellsworth, Me.) 1855-current, 1870-12-29

IL Is encouraging to notice in the dmevi-
can. from time TO time, statements in re-
gard 70 the excellent school houses which
have been built In Hancock Co.. during

- - SH'ouIhGtHy 10 notice III tne ifaSY;-
can. from time to time, statements In re-
gard 70 the excellent school houses which
have been built In Hancock Co.. during
the past year. While improvements IN
desks and blaek-bosris have b. made.
and our school rooms are finished with
that taste which their noble design merits.
II il Ia be feared tina, liitle. Or no regard. i
had 70 ventilation.
A school house lnav be beautiful. and
still be nursery 81 death Instead of life
Trnc ventilation provides for the admi~-
sion Of a quantity ~ pure air, sufficient for
the wants Of every pupil. and the escape OF
that which has been re>pircd. Air be
| comes impure b. respiration. /, /, thrown
from the lungs loaded with carhonic acid
ga--a deadly poison this ga. being
heavier than air. sinks 10 the floor.
How shall Il he removed? Not ~ an
opening into the attic. nor by dropping
the upper sash Of the windows The
chimney should extend frosn the basement
81 the building to height OF several feet
| above the roof
/ Il should have two tues. one for smoke.
the other for impure sir. Near the floor
| there should BE- an opening, Of $50 or 2f0
| inches area, into the ventilaiing ilne. for
I the escape Of carounic aclI. There should
| also be passage into thi, Hue. y, the top
/ OF the room. for the escape ~ supcrfluouS
! heat and any lighter gases the height. aud
heat II the chimney. will give To the ven
iiating iluc strong dram. The upper
passage should generally BE- cios.d. An
opening j. now ready for the exit II the
+ impure air. but Il viii no, pas ont. unless
pure air i admitted 30 the room to cause a
| current. flow 20 admit thi- air. IN winter.
without danger to the pupils Is an import
ant question. The hot air pipes Of furua-
c.s furnish supply. bat district school
houses are not provided with furnaces.
they may have something cheaper, and in
some respects better. sl.. what mas be
called the vcn;iaiiug stosc
This may be- an ordinary box or :, Under
stove incio'cd, except ihc part containing
the doors. with tin casing placed nearly
foo, from the stove. resting upon the
fnor, and extending several inches above
the stove. this easing should have light but
firm iron supporters
u Directly under I'll. stove there should hc
an opening, II list feet squarr through
the floor into which Il fitted n furnace
register
Connected WIKI this opening, there
should b. . cold acqucinct, extending un-
I der tho foor. and opening through the
wall a. opposite sides of this housr-pI~.ra-
ton. ~uppn+" the register beneath the
stove @ ~ clo>cd The iirr /, built the air
In N" room become. heated portion ~
the cold air escaping iarnush ,he lower
opening. m account Of fhr expansion ~
the warm air. which has risen u the upper
par of the room school time" hayin.
4 come. the Register under the -tuyr Il OPEN
Y cl. a strong current II pure air RI shes IT,
7 i strikes The bottom II the stove and !.
warmed. Il passes up arpEnI thc .roy,,, ~
tween 4 anI the easing H. -iiii further
heated. ami ri4e- &" tine upper part 81 the
room. filling the space. it prr,~~. down
upon thc stratum u inpurc Aud colder
air. mixed with the carbonir arii thrown
from Ihc lungs ~ i4r r,iril-. drives /. Ia
the floor. thence out through m. lower
h "ivnnng INTO thr chimney. taking place.
20 bc III turn driven out. When K ha. BE-
come impure
This operation a 4 COM ant oilr. lnd thr
MIR " a r,,,tu TIM ,r,,sp,t,.l -,.,+. a.,