The New York herald., 1870-02-14
The following are the reslIts obtained Ia schools
Of Brooklyn, " tho method OF analysis nave dcs-

| Coilsse Grammar Scnool, snotner position Of sssl~ 4
College Hss. ,i.,naar school, another portion Of -
tdsss" rec a., Grammar m ;cioo. cl.ss roo.
Polytechnic Insutue third story. @a az
r. yssehaic ia.iaaie' second story;
Pubic school No. is Degraw street. 2Sl stf 20
Public School No la another room. @0S ~
Puzzle school No ls anornsr room. lw s3
Pubic Pubic ssasoi No. i, .soihsr room.......... Sl
pnp,;o ,,; senoo, s o. 80 80 An"Ns fooa' eJ
raSie sehSoi No. No. ~ anoisr room
Public School No 20 another ........ LA -
Ia estimating the proportion OF carbonio acid IN
the air OF schuolr0oms " that naturally existing In
ng 2, tne cs ss ~ -
In al those cases tne attempt was made to ind the
air at Its greatest degree Of mpnrty, or alter the
rooms had been longest occupied.
The pupiio schools Of Brooklyn are mainly butt
on Inc same rncde and are warmed and ventilated
few viii furnish an estimate of tue excenences aud
defects OF all. Our inspection OF sQts
SCHOOL No. ], an CONCORD sTBEEr. :,
gave very favorable impression. There werc 500
children present, 800 beng on the rolls the day
10 degrees Fahrenheit IN every rom but one
IN WHICH II was as high as "A degrees.
,tae air noticed AM was taken from those rOous or
comparlmentsn IN which 1t seemed most probaple mat
nut or L5 parts IN 1000 were the highesu proport
lions. The neatei air streamed abundantY iaLo the
rooms from ar CHANGERS containing coils tWhca
last were heated by separate boiler Tor each hOOrl
and escaped through ventiiator ~ each room, not
IL. from ths floor tarough whIca " passed YlEn 6uf
cient force to draw IN light handkerchief neld In
froat of the opening The scholars are at school
from niue A. M. ~ three II. NJ, with nour and
hall OF recess og intermission. Tue general impress
sion was one Of ofenigntened desg aud nanagelient
As We were In search Of results only We ald nut
enter INTO details respecting tho acapacMy OF the
rooms, Lor tho measurement oil the size Of the lnetS
and Outeta OF aIr, nor Its velocity OF MQA0n, whch
ougns TO be taxen INTO consideration, however,. IN
the, architectural arrangements Of every public
- IN fUBLIo SCHOOL NO. is. -, /. 4. !;
Tenth ward, 1t was I0unl that basement which
had been Designed or play room had been required
by the pressure OF applications TO De made TO do
wee by dividing It Into scaoolrooms. In aroom
twenty feet BY twenty and len ieet hlga, IN WaicB
were ia boys air taken W. noon gave Two parts Of
| carbonic acid per one thousand; another room
tweaty feet by twelve, with seyentynins scholars,
gave Iour paris per thousand. A room designed as
! COAX room, and OF correspOndllgly restricted di
nensions, contained forty Of tho smallest children.
A lowered WINDOW was its only yentlIator. That
one OF these rooms sao0id have contained eigat
times me proper amonnt Of carDonlc acld was ey,.
they were made 10 serve, ts..& stt.t.l
in Dagraw street, was inspected on cold and
ci0uay day, when all ITS windows were closed aud
Vt the hour OF eleven a. NJ, wnen It's rooms had
side compartments on the first door, containing
fifty schoiars, the Thermometer MAS I0und at
Is degrees Fahrenhsit and shs air contained
fant class rOo the last room on tins 10or ar taken
from tue Platform contained rs parGs carbonlc acid
per l,ooo In tine class room on tne thrd moor the
venti4tor was found obsLructed Wy the dresses OF
the pupils who sat against II, but there were only
SO parts carbonic ACID the air, probably BECAUSE
very properly, the mad been renovated IN the ao
Eence Of the caSse2 by open windows In one OF the
compartments on tue West Side on the ,hird door.
2.7 parts OF carbonic acid were found. In all the
rooms heated air was iOund rushing abundantly,
but the yehtiiators were acting witl varying dc.
grecs OF efficiency. s. aes 1 ..e.9s. "a, \
pUBlIC SCHOOL NO. q st -.
was inspected on bright, cold day, all the venti-
at0rs showing good draught class room for stail
children oa the first door under the stairs gave 20
parts per l0O. Two OF the side compartments
containing about seventyhye scholars each, gave
L. and 1.6 parts respectively. ngt.s.f I
PUBLIC sCHSuL NO. 2o.- sg}s !
The upper moor Of tnis building, the ceilings OF
which were low, was not examined, rs We found 1t
on the frat noor, Win Windows slightly lowered.
found TO contain 20 ana Ia parts OF carbOnC
ing only, and under exceptional circumstances, the
amounr OF carbonlc acid was found as high -
EIGHT TIMES ITS NORMAL AMOUNT
of half part In a thousand. The proportions given
were those obtained after from two to four Of
occupation. The principles Of heating and yenti-
lation are good but IT Is dilcut problem TO keep
| season. In oil the schools the heat was found
| abundant 30 that mora powerful draught Ia tte
introduced Win advsnsase % But with the % prescnt
arrangements the purity and proper temperature OF
! tire eir wii depend greatly upon the watcnfGncss
OF the teachers who snouid always bear the above
| fact IN mn d. There are but lew days when the
| windows may not be slightly lowered rom the top
| witaodt creating cdrrents which would endangcr
te health OF tie children; but changes In the out
sidc temperature, IN the direction and face OF rhe
WIND anu consequently. IA The supply Of heat from
| require corresponding accommodations wnich
| oniy attentive supervision can properly regulate.
| Every room ougnt TO contain q Thermometer,
as sensations OF heat and cold are very falacicus.
Ihe proper temperature FOR schooi room IL seventy
degrees found in the Swiss schools Is rnncus to tne
| health The depth and completeness OF respiration
shs nc s nosY me as
splred air. When the heat oi the latter approaches
that OF the blood the feex movements of respiration
less energetic anu less efficient. dash OF cold
water on the body e1ctes an Involuntary inspiration.
wniie water at the temperature OF the BODY arouses
no such reflex movements. IL Is 80 win respiration
degree than stXtydve or seventy degrees attended
with q sense OF bodily discemIoTt apd should be
| cLARKF,s COMMERCIAL COLLEGE
occupies tue upper story Of Nos L. IL and 10 Court
street. 1t cOhssts OF one large hail, divided ante
two nearly equal portions by an alcoye, and OF sey
cral smaller rooms for rectatons There are venti
iators IN the ceiling OF ins principal han, but "a.
tnat there IL the closeness lnseparable rom this
mode of warming IN the absence OF ventiIators CON
OF the large hall was occupied, but air collected Ia
corner iaffhest from tho alcove and rear the heat
as wSs ysys n part. per Ss ,ss q
parts Of carSonio acid TSl. resSl. 0n Was w
| uat0n. or the ditfuson OF gases In AR perfectly
free from circulation, Is not to be depended upon Il
1 Keep tue atmosphere of . fOotu IN dueaome con
dlton. The indications OF this ms pection and or
subsequent Analyses were tnat carbonc acid cling
10 warm moist still air with considerable enacity
Fearlut lest an error OF analysis might have pre-
sentel false Indications. ! examined more closet
into the subect, aud found mat when the oiiieren
portions OF room were at different temperature
the greater proportions Of carnonic acid wa
most frequently found Ia the .warniest locall
! itles An attraction of moisture for tarbonIc aci
w0uld a,d Id placing THIS food OF piaats more rrauil
at tntr disposal nno rs ttfust be drawn from On
/ ar wfiicn Surrounds toe plant such . ptovStb
'Wou46 seem necessary. MaTit moi 10 tina" tue IN
creased capacity and attraction OF hea.ed air 10