, 1874-05-03

| n1iucAu1e, secuIo II IRON OBSTRUCTION BY SNOW
and ice, or otherwise; !. while the material o1
| which it will be built, and its location in the
middle OF tho street, avoid all danger Of injury
By the burning Of adjacent buildings.
bl1A-The durability Of its material, and the
facility with which repairs can be made, BY 1ea.
eon OF the ready access to every part, aud also
being entirely unaffected BY rain, frost. or SNOW,
| secure
| THE PERFECTION OF TIE WORK.
and thus insure the safety aud regularity Of the
ours passing over it: It is easily seen that such
1oaa a. a. this. suitably constructed; will ap~
any road yet built ever has. It
| will have no switches on its line
Of travel to b misplaced, very slight inequality
OF surface or Of alignment in its track, and con-
travel. already leas than those Of any other
means of communication, aud which are mainly
duo to those two causes, will be reduced to q
minimum. To aome persons, the fact that tho
road is st all points considerably elevated above
the ground may suggest foar Of danger in caae
Of accidents by which car might be run OF tho
track. What ID stated above shows tho small
risk that such an accident can occur but, even
il should, the arrangement OF the structure is
auch, that the effect will be no greater than a
train running of track on the level Of the
earth The iron framework supporting the
track will in such case uphold ths cars and tho
side-tEusses will act "a red and substantial
railing, so that
II NO CASE
can the c-rs bo precipitated to the ground. These
considerations also demonstrate the increased
capacity Of such 8 road over one OF ordinary con-
struction- The more nearly perfect the road,
the greater the certainty with which trains can be
worked upon it, and the moro frequently they
may safely be passed over it. It is difficult to
see Why traina may not follow each other at no
greater intervals than paT be required TO check
the speed OF one 80 % to insure the safety OF
t:sat Immediately preceding it. The. il.eryala,
wl1.i tho light trains proposed to be employed,
aud their consequent small momentum, will be
so short that no more than single minute OF
time need be intezposed, on eithor track, be-
tween tue passage Of trains, thus insu1ing do
gree OF efficiency such as has not bsen in prac-
tics attained on any road yet built.
Sere1h-Nclther during it's construction, nor
aftor its completion, does this plan interfere
with the gas, water, sewerage, or pavement OF
the street, nor with An. work necessary in the
repair OF enlargement Of either.
Ei1hh-So far from being an obstruction to
the street. every passenger carried on this road
would relieve it as cffectualy as il carried on
some other avenue, and yet no business be d.
yerted from it. and tho vast sums invested IN
property on lta line remain untouched in value.
It should bo considered that the space proposed
by this plan to be used Is now vacant and unoc-
cupied. It furnishes light aud air to the build
would still do almost perfectly it this new street.
were built i'll what 10 now waste space. It con-
structed in the manner work Of jsuch impor-
tance should be, and the whole structure taste
fully finished, it is beliovod that it would
ADD 70 THE BEAUTY,
as we'll as increase tho usefulness, Of the stree!
in which it might Be constructed.
Nlnas-The advantages to passengers OF such
a road az now proposed, ovor any that can bo
built under the surface OF the ground, are great
aud obvious. Want of light, aud imperfect VEN
tila.iou, must Of necessity bs encountered in
any underground railroad; aud, il locomotives
be used IS motive power. tho latter difficulty
will be greatly increased by the vast quantities
OF deieterioua gases generated by the combus-
tion Of the fuel employed, whatever that may
be, and which to q serious degree will incom-
modc and even endauger, Passengers The real
extent OF this objection Is shown in the report OF
Mr.James P. Kirkwooa, G. E., on the London
Underground Railway. made to the Senate Spo-
cial Commission Of the State Of New York. Nov. !
10, 1865. The length Of the limo OF the London |
Underground Railroad proposed to be built is
about Il miles. At the data Of Mr.. Kiflwood's !!
report. ~ miles were in use, OF which one fourth
,cas open cut Mr. kirkwood says: when |
the railway passes behind tho tenements or |
as much Us possible. Wherever it is practicable !
to have tho line open to the sky, the Resident
Engineer remarked to me that 1t was usually |
made So. The ventilation is always difficult in !
long pieces OF tunnel, and, where 80 many trains |
ire running, tho smoke or cake-gas must, under
come oppressive" ]
Since the date Of Mr. Kirkwoods report, the |
Railroad Of London has been sub
,tantlally completed, aud the difficulty in YEN
a1ating the road which he anticipated has oean
ound
PRACTICALLY N8UPERAHLE.
A correspondent OF tho New York Express, In
be summer of 1872 says: Soma plan has re:
0 be devised for purifying the Hir i'll the tunnel
'efore the latter will be q perfect success. In
t5ar+ nfr1
ng rendered more SO from the sulphur arising
rom tho burning coal. Although the engines
onsume thor own smoke, they have 80 far,
allied to overcome the emission Of tho su1phur1c
'ailHay is not well patronized, and is, financial
7, 4 failure"
Upon the road elevated as now suggested,
hesa difficulties arc wholly avoided, and pas
angorn are conveyed in full light aud open air.
Te7aut-The access to cars upon this road would
road is built must bo either above or
GLOW the present surface OF the ground. II
pom q new avenue, still it must pass over tho
ross-streets at such height not to obstruct
heir traffic, or, in other words, must be e1o-
ated az tho road now proposed. II the road
houEd be built below the surface, tho depth OF
be excavation must be at least as great as tho
eight required for m elevated road, and tho as
ent and descent in either case will be the same.
Comparing an elevated road to one UNDER
/
tant1alIy that Of going down cellar, or to the
,cond story in . building. Tho approaches to
lis road, being through Whiting -rooms. shell
,red from storms, and entirely above the car
4ge-way OF tho streets. will be greatly moro
greeablo, and also safer, than those to the
rdidary surfaee-roads. Tho annoyance to pas-
,ngers occasioned by passing over muddy
:ossings to reach t5e cara in stormy weather, |
nd the danger from passing vehicles. are se-
Gus evils, which, by the plan proposed,
ARE ENTIRELY AVOIDED.
nd. when reached, the cars will be mere COM
,rtable than any surface-road cara can be.
Their greater sizo will allow them to be
armed when necessary, and thus prevent the
scomfort and exposnro OF health now borne By .
/ who enter the present atreet-carB.
Tnis plan has the merit Of enabling its cost to {
, estimated in advance Of its construction, ]
ith very great accuracy. It's structures are
lch az. are already well known to engineers;
I'd it docs not require either, on the one band,
10 acquisition OF large amounts OF real estate
7 the opening Of new avenue, tho cost
which can hardly be estimated, though
,oun to be eDor1uons; nor, upon tho other, the
:ecution Of the most difficult and expensive OF I
engineering wora,-vast underground struc~ j
res, tunnels, OF their equivalents. In large 7
lies, in which such works mast be constructed, :
NJ ht1i{1 I