New-York tribune., 1896-07-26

section There are therefore, no serious engineer
ing difficulties to be expected The silt in tnat fau
head system and this portion Of the work. being
lined with a steel tube, will be as permanent as any
other The interior dimensions OF the completed
tunne.-twelty-elgh feet wide ard twenty-four feet
hgh-wtll be extraordinarily large ior r. a donolr
It of such size as will insure perteGt veiiia ul I,
and admit Of exceptionally good uimaiIion; noveptv
worthy OF remark in the tunnel will be the einpoy-
men OF device patented by MaJSr d. % ca,sed bv
the fr~akage Of wheels axes. 1t consists al raised
s,,opIemenfal tracks. which will be closely ap-
nrooa,ched bv steel rollers fixed beneath the side ss
Of me cars In case of a break a car could not be
Srcppci more than fraction Of inch. and here
sengers but delay in movement or me lhJuiTi lhJu.
rrI u, ba tainn to insure that the tunnel shall never.
from any cause be blocked or even Temporarily r.
cent witch is very much less than is now con-
stantly ana successfully operated both by electric
and cable roads in Brooklyn and New-York. o,.otor
II IS expected that ground VIII De proMeN %
I,rooklvn Railroad Company and the Columbian
Company limits 10 eighteen months INC INC term -, ~
"n,n,on ~ the engineers who have positive data
FOR their calculations from the tunnel already con
viii be renuired They do not think that more
than twelve months Will be required, assunlins a
q viii be- That was the estimate made by both
General William sooysmith and George ;. Morri-
SON. METHOD oFscONsTEUCTION.
Two great shafts Will be put down close 10 the
river. on It's opposite sides. to the tunnel depth'
and from these four breasts" can be simulta-
neously worked All the material excavated ana
raised through these shafts will be carried away
by floats on the river. Should It be found neces-
sary TO expedite matters by excavating also from
the termini of the tunnel, little inconvenience. II
any will be caused to the public, as all the work
will be on the companys own land purchased FOR
terminal purposes. Tho openings near the river
will be- upon completion Of the work. converted
Into ventlating shafts -
Although the solidiy OF the roadbed, the com
narrative lghtness and approximate uniformity In
weight of loads carried over II, the strength OF
the tunnel construction and its depth below the
surface In the greater part of its land extensions
will also minimize the probable transference or VI
brations structures over the line, II Is the pur
pose OF the company, for avoidance OF the possi-
biity OF even fictitious damage claims, TO procure
right OF way by purchase wherever the line passes
under private property, TO cover this the pur-
chase OF property for the termini ana the con-
struction OF the tunnel Will, II Is estimated cost
about 81. 500 000 The cost OF the Bridge was Slo-
900 600 vet the service IL affords. at least in the
Transportation Of passengers Is far below that OBJ
tanable by the tunnel. while there Is no compari-
son between their respective costs OF maintenance
Connection Of the surface railway systems OF the
two cities through the tunnel Will probably give
new stimulus 70 the anxiety OF the elevated rail-
road corpora tons for like connection by way of the
Bridge