The New York herald., 1869-01-29

The polytechnic branch Of tie American Institute
met yesterday evening in room No. "a, Cooper In
stitute After the usual presentation Of new inven-
tionA &C., the question OF bridge 70 brooklyn was
discussed. Samuel d. Tilman occupied tne cnar
and presented the following plans kr the considera
tion OF q well attended mecting;-ME lemuei Wen
man wrights plan combined the suspension ana INC
arch. 1t may be said to consist Of series OF HoR
ribs 80 connected and arranged - to sustain or sup
port the pressure ana tension OF each etAr ana ING
form Of ribs may partake OF any CURVATURE or IKE
the common girders, may be- brought nen'iy level.
All pressure Is equally distributed through out tine
whole structure or framework. att
DR.. Rich thought that all plans fCf bridRCA' were
but nero chimerfcA experiments ana thaA the
desideratum to be attained would be better a<se ON
plished by the erection or causeway a. the er 70
bridge Of sufcIent height 10 permit ships TO- p -
under 1t would be at least three quarters Of m
from the e. riysr fOns on 1 each . SIDE d D the .tss
impatient Of delay. Dr. Rich also SID II - manifest
that the commerce OF New York win eventually be-
or modern tmes-and that the city nuast becme the
centre Of trade and exchanges the storehouse and
some way must Be obtainsd nom the present
cramped ana crowded condlhon OF things, The
snS is influence n cespsnins ths ehanss
Hook, qutet1ng the waters OF Hell Ca y ana 0sdef
wise mPFovnG sne nsr0or also strongly m y the ses
and not true river, thus affords such conveniens
and magnincens docks as cannot be had elsewhere.
corsa Eoos 1oSs q Broad
slip, making two. or three large basi ~, with
be kept on the eastern side Of thts~ docks
and accomTcNnons 9 70 be provided for &c, Scess -
ali descriptions and sizes to pass through q : nIgh
tides or stated periods Of the day Or night !. The
sd IN with R esrts IN making sold DID ground for bnS
tngs and stores, except at the ship passage WAYS
which are to be crossed 5 6y BRIDGES Of forty sey
feet Is the width OF the centre street. the stores and
warehouses on each side beng $50 feet deep. Five
The signal nag to be used shows when the way
Is open for passing vessels, the times Of opening 70
ways in condition for uninterrupted INTERIOR Hse
between the two cities. The cost will De many nl-
elem elements Of sefconstruction and preservation, 50
that no municipal aid will be- required er-
tolls or taxes on the people at large but tins proe Ct
looks only to the rent Of its wharves, warehouse
and stores; which promise to pay large percentag m
abundant capital being supplied as soon as wanted ,
Mr.. George W. Dow followed the preceding
building OF . causeway in preference to q bridge.
He said 1t would offer serious obstruction TO the
convenences does away with all necessity for ferry
boats In its vicinity This greatly lessons the number
Fl rvs Il aso s to larger
sells and foreign shipping, with the ocean steamers
that they will gladly seek ITS ald ana ~ = M evl.
to pass uninteruptedly through, except occasion
ally, as now, and when repairs are desired q the
smaller class, chiefly schOOners and sloOps IN the
coal and lumber trade with some few Others, from
best Information obtained from Hell Gate statistics.
large allowance win be $50 sail for one day. This
exceeds very considerably the present average,
which Is not much II any over 100 sail per day. Ad-
mitttng that at present 100 20 through the
docks the whole can pass In from one and half 70
two hours As for the objection in Its labillty to
freeze experience ct the Atlantic Docks BROOKLYN,
fs ann ctonf IN
quently obstructs the ferry gives little or no trouble
to the basin.
After q considerable amount Of dissenting from
these gentlemens plans the meeting adjourned untn
Thursday fortnight