Memphis daily appeal. [volume] (Memphis, Tenn.) 1847-1886, 1875-08-07

EADS'S JETTIES.
she FascIass-HoW they are usdc and
Put I'm PIsce-HOH the JeGtIes use
MAde-Pr0greas and Benefits
of the Work.
New Orlean. P.cavune.

J New Orleans Plcayule.l
At this point Mr.. @. w. r. Bsyley,
/ who had been down at the works since
I last Saturday, got on board the Iberia,
/ and interested himself TO show as much
/ as possible and explain the works. The
/ boat steamed across to the wharf on the
/ lands end at the eastern side, where the
| party landed to examine the fasciues 0g
/ willow mattresses, as they are called,
| which form . leading material in the
/ construction OF the jetties. In this COuT-
| tesy Mr.. Bayley was assisted by MI.
! COTthrell, Colonel AndTews's represent
alive. Colonel Andrews himself was
! not at the works. Along the shore and
/ Overhsngiug the water was huge
framework, peIhaps six hundred yards
long, worked by means Of rollers. On
this framework were the willow mat
tresses already prepared. Each mattress
was forty feet wide, hundred feet lOng
and two feet deep. 1t consisted OF will
low trees, branches and all, lying hCIi.
zontally and closely imbedded, so as TO
form SIS solid mass IS possible. These
willows were 81 securely bound in q
piue-wOOd framework Of the dimen-
siOns given, and fastened by means
al thick wooden piles driven down
through the willows from one board
Of the framework TO the opposite
one U deTDeath. When finished they
are launched into the river by means OF
the larger framework on which they
rest, and which works on rollers. They
are then foated down 10 the point where
It is proposed 70 sink them, and securely
Tar .ened. \ layer or stone is then placed
on them, which sinks them; but they
would themselves sink in twelve or fl
teen hours by the mere accumulation Of
mud. Two mattresses can be made ia q
day, and the willows are obtained from
the Jump" Til within the past few
days, work was entirely confined to the
eastern wall. This wall vii be thirteen
thousand two hundred feet long, bat
piles TO the length Of seven Thousand
feet have already been sunk. Work was
at first commenced by means Of one
floating pile-lriver. This is q huge and
Intricate machine, with an immense
hammer, worked by steam, which, with
one pOndeTOUs blow, buries the pile in the
ground. The average length OF q pile,
where there is uniform depth of water
OF ten feet st high water, is twenty-five
feet, about one foot and half pTOtTuding
above the surface of the water. These
piles are Of yellow pine, twelve inches by
six. Ihere,aTe two rows OF them for each
wall, each row being uniform distance
of twelve feet nom its fellow. When q
fascine is fiOated down, it is secured to
one Of these piles; layer OF stone is
then placed on it, and the fasciEe Ia
sunk; another fssCine, with q layer
Of stone Is sunk on the top OF
this and SO on to the end. These
fasCines, Of course, are sunk on the river
side, and there is nothing yet between
the TWO rows Of piles. These faEcines
are so firmly secured that by no posi-
bility can they be disturbed in their
beds. Naturally the mud will seek those
sides and settle on the fascinea, and thus
form them into a concrete mass, thereby
building up wall of mud, the best pos |
sible jetties. A sheeting Of yellow pine
is fastened on the inside Of the piles
Between the Two rows of piles willows
will also be sunk. as also on the other
side OF the outer row. A solid base be-
ing thus created, a stone wall will be
built for 3 couple of feet over the water,
and thus the jetties shall have received
their finishing touch. Work on the |
the western wall has only just cOn- |
menCed. In consequence OF the jut Of |
land here running Into the sea, this vail |
will be shorter than the other by four |
Eads's contract require that the mini, !
mum distance between The walls shall |
be seven hundred yards, but he proposes |
TO run both walls parallel, and OF uni !
form distance OF a thousand feet. The |
stone used in the construction Of the |
jettie5 comes from Cape Girar- |
deau. Already, with the comparative |
" Little work done, there is a notable in |
crosse in the depth Of water. Accord |
ing 70 the latest sOUadings taken by the |
United States engineers, the depth OF |
water at certain point YVES twenty |
nine feet; MIR. Bay!ey, q couple CT days |
since, sounded in the same SPOT and |
found four feet OF an increase; likewise. |
q place found by the same engineer to |
contain tTeDty-niHs fest Of water, hl s /
increased 10 thiriy-thTee; q place Of |
II twenty-five. and fifteen and
Oue-n2lf to eighteen. This is a prom
isiug eZhitit with the little that has
been done. The entire number OF hands
employed around the jetties is about one
hundred and fifty. Captain E4ds ex-
pscts that within s couple Of months
thefe will be uniform depth of twenty
six feet at the bar.