Delaware patriot & American watchman., 1828-06-06

m bucks Of any size anu weight, as 70 expect with
confidence participation in some OF the bene-
fits TO be derived from the execution Of this
BrenkuGter. Brand ywine hundred is based upon
ledge OF rocks, and much of IFS surface, near
the navigation, is covered With blocks Of
stone OF a kind precisely suited from its great
specific gravity, for the Foundation and erection
Of such work. There is no ,aak Of enterprise
or capital in our citizens, to fit them Tor under
taking the whole supply Of stone. and no where
can the government find supply bette. sulted,
or that can be more cheaply delivered. II IS ex.
pected that advertisements for proposals to con.
tract vii! be issued, aud il this should be the case,
we have little doubt but that the immense body oi
stone near u.s. and now lying in its native bed, not
only useless, but detrimental to the agricuturist,
will be drawn IRON ;aence, and add a vast amount
oil wealth to community that needs it as much
and deserves il as we'll as any other.
TO give our readers some idea Of what Break.
water is, and the labor and materials required in
its erection, we offer them brief description Of
one erected in Plymouth sound, in England
The length Of the central part of this Break
water is 1000 yards, with two wings Of $50 yards
each, which form an angle with the middle part,
Of 155 degrees, the angular points projecting TO-
wards The ocean. The transverse section is IN
form of a trapezod; the average base extending
to about 29O feet, breadth l8 feet, and average
depth about Sc feet. The slopng sides towards
the harbor, form with the horizon an angle OF 35
degrees, and towards the sca, an angle Of 22 de-
grees. On the top it IS proposed - oaild pier,
tremity. Tile average depth Of water. in the u.
cnty Of this structure, is Sc feet at low lie, and
it is carried above that 20 feet. On thg top u tie
central part the stones are 50 arranged, as to form
a convenient path TO walk oil.
The Guarries from whcnce the stcne we're drawn
for the erection of this Breakwater, were opened
in August, 1872 and in July, 1925, 1,S0O.Goo
tons Of stones had been deposited. The original
estimate was 100000 tons, at a probable cost oi
1,l7l,oo0 pounds sterling. The blocks Of stone
used, weighed on an average, from thee to five
tons.
The Breakwater at the mouth Of the Delaware
Bay, will be 740 yards long 10 the central part
with two wings forming angles Of 135a each, the
one 44o yards ,ong, and the other $50. The base
of the interior slopes will be twice the altitude
and the exterior base four times the altitude
The harbor will contain half square mile, with ar
average depth Of 2sft water The quantity fston'
required is 9s,76o,592 cubic yards, and the esti
mated cost for completion about 2,o50, 900 dollars
We feel strong hope that scme d cur iniiucn
tia citizens will make such COMMUNICATIONS t.
the heads Of Departments, as TO draw the attention
of government, to the excellent and abundant ma
teria in this vicinity, that has been sleeping for
ges in utter uselesness, and which, If the opportu
nifty Of drawing into action and use be passed by
il may sleep on for as many ages TO come.
---ss 0Css.gl S..s