Ellsworth American. [volume] (Ellsworth, Me.) 1855-current, 1871-02-02
Ventilation.

The subject of ventilation has been
somewhat discussed Ia the Anericdn with
in the past few weeks.
Truth Is many sided. and perhaps the
whole truth in regard TO ventilation, has
not been reached. in the articles referred
TO. When air which has been drawn into
the lungs. /, forced out again IL quality
j. found 10 be c>-cntia y changed. Much
OF it, vital element Oxygen has united
with carbon. which the blood in the lungs
gives up. aud it, place is supplied by car
bonic acid gas. This ga at the same tenn
pcraiure i, heavier than air. and Is pois
onou, Thi> j. the gas found at the bottom
of watts. and Of old wells. and in H. UNI
combined state. speedily destroy life.
The temperature Of the blood and Of the
lungs is about q degrees.
The impure air from the lungs. has been
warmed by it, contact with them. and
being lighter than the atmosphere around.
whrn expired. rises. H. however. soon
Goods aud then fall.
M r,r;rction of the "scmitlc'' mode
- -n,ii.ij,.n. !, therefore obvious. The
ait from the lung. with it. carhouic acid
ga. hcing warmer than the surrounding
for time dos No harm; hut it soon Goods
and then dcsccnd-. Ia be again taken into
the lungs. aud again thrown of. becoming
more aud more impure, by each repetition
Of the process.
Another mod" Of ventilation i, to have
an air fluc in tn" chimney. with = register
near the ceiling. aud one near the floor.
but 10 depend almost entirely upon the lat
ter for the removal II the impure air Il,
!, apparent. that this method. has. Ia a
large extent. ia, objection 10 the ',cniflc"
modr. The air ju>i from The lung Ascend, /.
il c""ls and de-ccnds, and j. again r->pir-
~ ami sent upward again. again cool, and
i--crnd>. and l. again drawn into the
lunG- aud Il must be Ion. hcturr il make.
it. eNii through thc lower register.
II air once rNhalcd. upon being cooled
made hcc-liu" for 10" lower register.
carefully avoiding al hang. the i"oF reg
i-tcr lau would be effective; but such j.
NJ; the practical operation OF .hiu.. Il,
i believed that both register, should u.ua'-
j. be Acit open in school rooms. on whc c
any considerable number ~ persons ar,
assembled.
The 'entilating Hue. should Dc ~ tie
SIDE II the -moke ilue Ia the chimney.
The chimney just before /, reache, the
rd.epoi- should he contracted on two
side. perhaps from - to 10; and the
wall between the smoke flue aud the ven
tl!ailug iluc. discontinued where the chim-
nry begins 10 contract. Thus, the heated
air Of the smoke fue Is turned towards The
ventilai.ng side Of the chimney. and as
cendlng rapidly. creates current in the
venjllatlng hue. 4 similar effect Is gained
IN large public rooms. By placing a small
stove in the upper part OF the sen;ilating
fue. The stoves, arranged for furnishing
warmed pure air. If such are used. or the
registers connected with the furnace,
should be at the end OF the room opposite
the chimney. Thus. pro, ision Is made for
tic NPVtNa 4tHAoN Al oi impure ar. anu LOT
steady supply Of that which Is pure; and
the slow current OF air from the no, air
register end Of the room. towards the
other. tend, 10 insure an even temperature.
Ths method Of ventilation II is believed.
j. based, substantially. upon sound phiIo-
sophieal principles. and certainly has the
sanction Of the best authorities on the sub
ject. Y.
| Casino. Jan. 80. ISL.