The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1869-11-08

LtN 4AI1OhAAs m OAS LII
with the bottom The joining Of the different lengths
Is effected by Of folding Joint; and the tube
complete |, the water viii be pumped from tue IN
shore sect ons and additional ballast inserted. An
interior structure or columns, separating tue road
WAYS and f0otpaths, Is placed within the tube inc
bukhead OF the next section Is then tapped anu tne
water pumped out; and 50 on. until the structure
has been completed. section by section. IL - eX-
pccted that the tide will nearly cover THIS tuhnei
with deposit The specifications are:- .,o
coo feet OF tube li,o,o
Mnole cost 90 soey
Time required TO bniid one se FAY
Grade toward the middle or the river...... 3 III lOo
A thu and very ingenious plan merits even more
EXTENDED description, on account OF It's novelty.
tubes or rolled OF sufficient thickness, The Sec
tons being 100 feet long, sixty feet wide and thirty
feet hign and grit al the bottom with Iron sTngers
az intervals OF three feet. Tne are is reinrorced
wnere tlo plates join by ribs OF iron one loot by
iloatea % either side or the wharf, tho interval
between being flled with o gaiiows frame The
de9eadng ropes Ok iron are next made Iass
ana towed into the stream The subnier-
gence begins at the bank or at the end OF
the future tunnel A Duknead having been inserted
II the OF shore end and the loose made iast to the
same end water Is admitted ana the section sinks 10
the river bed. Toe wafer Is then pumped ont
through manhoe, aud, by mere pressure OF super.
lncu abent water, the whole - driven down until
the crown Is even with the river bed An endless
peing pumped OUT. bed OF stone ana cement Is
then added, for bottom and roadway foundation;
pleted. hood Of waterproof - temporarily put
over the junction OF the sections to prevent leakage
drilled bohs inserted and tne JOINTS carefully
eaked as IN bonermakng. the pressure and tend
elcy 10 rise are calculated by IL. Q. Weiis an en-
Pounds.
Pressure per lineal foot. 100000
Pressure 10 collapse ACKNOWLEDGEMENTS. 100000
The design Tor the Interior includes double car
rage ways, nineteen feet wide respectively, aud
uJon second moor above these carriage ways Two
foot ways, aboat eighteen feet In width. For dura
billy II Is recommended TO line tne interior with
masonry. supposlng tue crossing where put down
to Do without rocks, speei1cationS would stand
aooat aS sao oined:-
seven thousand tons of iron. ............ $1,000
Whole COST. Z2b,GU0
rlme necessary Tor building. One year
Grade toward tue middle OF tue river. III 100
These plans have been Instanced merely 70 prove
that the problem Is very simple one and hIiputlan
In Its prUporIlons-lilipu ian, indeed, compared with
the PROJECT OF tunnel unicag France with England
winch most engineers regard as feasbie-thongn
twenty mics To traverse and depth or 100 feet
of water render the work complex compared with
tue New YORK and Brooklyn project The curious
subject OF the corosion OF cast IRON submerged in
sea water viii need TO be thoroughly investigated.
1t Ia uiar TACT that the body loses a consider
aole portion OF It's substance, while preserv-
lug the same external appearance The
lost substance is substituted by graphite
plere becomes intensely hot and crumbleS IN
pieces Tnis fact was discovered In 1910; bat Its
ooscufe, and neeI experiment and ejaculation. The
theory OF corroslon Is that neither water dry
corrode wheh actlng separately; ana IRON Immersed
III water not boied, Containing oXygel be-
comes electrically affected. FRESH water attacks
VITA ntt,e v'ruieace; clean salt water acts with
more rapi lity; foul salt water is more rapidly de-
s,rucllye sui; and the putrascent mud or salt
water bed aetaeks the metal with the greatest vru-
lelce OF ALL Tne subject Is WORTH attention ana in
TINS nm aye ought to command It, put Is one for
scientific experiment rather tnan speculation.
the disc asslon OF the bridge ana tunnel question
means OF giving it ful vent The nortDcrly pressure
mostly Longitudinal, remains for examination The
elevated l.way as tested must be admitted to have
failed; reports adverse to the Manhattan Under
ground Railroad, Peoples Railroad. Peoples Metro
ground Railroad, Metropolitan Underground RAN
road and Metropolitan Transit Railway were made
the prospects. Tie vandennnyg Tunnel having
played the part OF mere dummy, there remains only
two
PROJECTS FOR NonruEaLY STEAM TRANSIT
TO be considered. They are the tunnel and the
arcade the latter OF which has been and still Is most
favored by practical engineers. The bill for
the construction OF the tunnel became law
q year eQd q half since, but work has
as yes beea done, though work has been frequently
tnreatenei anu the probability seems TO be that the
project VIII IN The end be abandoned III favor OF the
Arcade Railway, all parties uniting TO put through
oil TOR lts construction vt the next session. Tho
two routes may be described comparatively.
ihe Central Underground ttnnne) taps Broadway
at the City Han PARK, leaves the Park at the northeast
corner. and following the line Of City Hail place,
curves Into Mulberry suect. The line OF Mulberry
10 BleeckeT UaVDg Ueeu passed over the tunnel line
breaks through Bond anu Great Jones streets into
Lafayette place ana moves straight ahead, cutting
! the line OF Foorta avenue &C Ninth street. The
Fourth avenue Is followed as far as Union
square, where tie tlnuel cuts the square mid
way. and moves Ia a direct line FOR the loot
OF Madison avenue, following which TO its northern
termination pushes straight north TO the Harlem
river. II VIII be seen therefore that this PROJECT Is
no. identical w1l me ,ro9dsay tunnel 9rQlsft qnd
made, with sufficient low tariff, OF great vaae TO
tae WORKING classes Dat . generally inadequate to
must be made the route OF tue proposed GulcS tran
Sit. The proposed route OF the Arcade RaiwaY 10
from the ba'ery 80 lhion square, by way OF Broad
great Central depot Of the road two arcades
begia-the one on the line Of BROADWAY,
the other the line OF Fourth avenue. Ine
western prong follows the line Of broadway
10 It's junction VITA Ninth ayeaue; follows Ninth
avenue TO it, Junction with tho KmgsDridge
road; thence follows The ro2q to 202d street. thence
DIVORCES westward and Terminates az Tubby Hook,
on the line OF the Hudson River Railroad. lhe east
ern pursues the line Of Fourth avenue 70 the Harlem
river, using SIX tracks instead OF four, account
Of tie great width Of the street. These two prongs,
therefore, II Will be seeD connect directly with the
great Northern routes, the Harlem and Hadson
railroads. Tile PROBABILITY u, therefore, that
Union square viii be centre OF travel; and
q yiadnct over the Hudson Mt Fourteenth
street IS already agtaied. This would render Union
square sort OF travel rendezvous. The con-
cusoa Is then, that Pourteoatn street IA hereafter
to become OF the great cross-lown thoroughares
OF the METROPOLIS and Union square q centre sml-
lar 10 that which City Hal square has been The
Arcade route in harmony with the great routes OF
travel to aud from the city; that OF the central un-
dcrgrOund Is local. isolated and open to fatal ooec.
ton, IN that II constitutes neither exterior nor
ceura tube of travel The open cuts necessary for
the ventilation OF tunnel preclude, however, The
idea OF tnnnehug Broadway, which would in 8 Great
measure destroy its utility retail thoroughfare
to say nothing Of the question OF beauty OF which
Broadway has nothing 70 boast. Building lots hav-
ing only INVENT ye Ieet front square on Broadway
has the appearance OF SO many succs OK buildings
SET one against the otler-a defect witch might be
remeaied BY combination Of several fronts In one
/ which mas been attempted In few cases vita OK.
4 cellent elcct. inc man features or
| TAE TUNNEL PLAN
| may be rapidly outlined, taxing the London tunnel
n basis; Tor the work has NOT been commsnced on
| the Central Underground 40 yet AMI, account OF
detective route difficulties OF engineering aud great
expense, Il w not be easy to get the capital unes,
WITH guarantees that Broadway snail reVer be made
| route OF under surface travel The whole emil
| neefng talent OF the city, with little exception
opposes tho tunnel plan: and capitalists IN these