, 1879-05-31

OF baltimore, Nd, who has been spending th,
most OF nss t'fno for several months nj Harvard
a'd IN the succeeding day accompanied him Il
asiete to the creamery OF Charics ". Sylvester
Esq, leading sud fntciilgca. farmer OF III.
Town Ut Mnrcngo. In this state, between tht
Cit4ca OF 1IarTard ami Marengo.
The principal object Of cur visit, A. least or
my part, was 10 Inspect mud observe ,l.c work
ny OF tic sub.carth atr-fluct of which prof
M'iklnson IL the originator aud pascntec, md,
eddif'g both Mr.. anil Mrs. Sylvester at home,
w werc offered every facility md courtesy IN
tnclT powcr to make our visit both instructive
und pleasant.
Hut, a. tic reader mar not know what sub-
cartll a'r1uct s. Will say tia. It Is, US It's name
i'nn!lcs, an Underground duct built Of stone or
DF'ek' Or both, generally III sections Of seq
"ent 7F halt circle. Sometimes, as In the case
ol th.s ose at Mr. s7lvcslcr's, they are Of tr-
anEllaf section; but, whatever their form NAV
be. they have the lower side fiat or nearly so,
ana m adc OF earth dressed with gravel, II the
sol' bc not already 30.
| These ducts arc laid from six 10 twelve fec. or
more beneath tic ground surface, or al tic ncu-
tsal point betwccn tho carth's subtcrrauean
neat ntd tlat received from the sun, which
| point Vaf1es tp different soils md climates.
lhe maximum elect 10 be gained from thesc
ouess ~ bcstsecured. both In summer and winter.
"hc4 ti1e7 asa laid some twetyo feet or more
oeio" the ground surface, aud when they haye
'chEtt1 oil ure or SIX hundred feet; md their
cross section should be Of such dimension AZ
VIII Afford all the air necessary. haye thus
stated tile general dimensions "a 10 sIze Of first,
class duct tn order to give the reader m oppor
tunsty to compare It's probable workings with
thc one Used BY Mr. Sylvester, which Is about
!oo 'cet long, laid sotne six feet below the sur
faco Of the ground, and has cross section OF a
irr,,,. o.,,, :" 49,. ~" -. nu.eu aEe fourteen
'... s".o onsn, ~ '''at tne auet haa an area Of
aoout 1No-tn'tas OF loot out, yet, small as It
Is, 49,. IL Is marvel IL It's efficiency.
prot,u1 in n zhaft ~ r,Iu,n,..I ".",o
c,n,,od ,r,,,, 80 t,,. k1'A,Msn ,9on, afiu Is
1920, .n ~ tp1et'ion co"i tilat has hori-
%ohtal rotation, 80 as to kgcp the opening Of the
Ind OF the duct termtnntrs M or ,,,t 49,. ~
Hoor of roo,, T., IT.. Ill. " 'as' aoose .ne
n,I...-, -, 'o"" III u!S ee,'ar, WHICH 10 suitably
a.as."a.a ans".u ~ creamery. from this room or
air, that connect With an c1han.tInr nwo
warmed bv the k,.chrn nrc ~ In. 49,. Aus'.
strong current Of COO, nj, IN I'm ,Is nnere s
warm afr in the winter constantly es ,,es..! Inu
through th,s ron,n, "'4'e' eo"'la"L'y passhe
Thr u,nr,n fr"sI II. =, :. ..
passes aiont, tro,11 ~ ~ T. ente5s Inc aact and
tetn,crn,nrn mi thnrnh,. T. s "onM 70 low
its tnn;st,,r. H. % IN I,''i - ,aoe toprec1pltAtr
Hir.stoI ~. ~ W nts ~ Eooms II le thoroughly
tnros ohs,rh.,t ~, out tne dele
tnrth' md II /. IL ra s.a,s,.s sutaet wltA LIE
rcsnraiinn. Int vuIu.,"a h9e ONLY Tor
nni nt1,er .,,1sanca. fr,r ~ sseetan'cs, meats,
river ii1r cII,narn ~ foIn.sTo ussi s1en rs nus
Sionc wnr!.I.rf,a rsnmt.stn1 ni.a Lic facihc
H.oF ~ tit ,;,i. ioF the purity
IN nstarrc ~ tta os,,I w. 80 at,Inusphere. As
of ths mir, NAV nsn,ts ,a pns,SanE Qualities
aIntemcnt that ihn nrnnr,otn. "stnatnenteatea ~ M
tucta.-oue nf lie iarT"s, T., ~ ~ oAo u tuose
:. 80. -. ~. - sN'S rtnkIse ~ iHe coHuLFV,-
sami doitars ,nst ho ct,ud & maeer o. one thou
mcnt IN n rnnm vsntotnd psec a - p!eee oi lfesh
summer 1ct Il rrmotn ,hur. u "s nnct. 10 MD
nortinr ri thr saason e,,, tot LIZ nottrst
entt NJ ntnetv ,1ay nttn." , 'anc i. nut NJ the
in snrh an ntmns nl,n1.. a,i,n,,, M,M VIII remain
indrhni,niv AMI IN -mr .t senllE almost
In. nir ns.s,.s 1 sr,,, ~, no4 H., n'ps through wteh
MI 9,a,',, ..,s en.a ~ uct mo tle room is
nintelv ~ tIc mr. ,s,r.e,., .le ..eass SO coh-
~ ~ 10 h ~ ~ utcsteo " lis snolsturo In
tGen' thrsn ,aSs. .a. ,x,.a III. unct' Aamittlng,
tnntnn,t ti,,t T.. wv yan uoubt 1or
as wa n,,oht :" b-o, +h. d, en ~, ~ atinnsphcre
al tivns T., ~ ~ vanI II. uaE houses niid, ahovu
nm 1