The Sun.
London, England, 1850-07-26 00:00:00

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(7,
.-(THIS DAY . MARKET NE VV..!

ARRIVALS 1111/3 WEEK,
1 Wheat. Barley. ' Oats.
I Qr 3 Qrs Qrs. Qrs.
2,150 140 2,280 3,850
L 9,350 3,250

lait.

Flom

English ..
Scotch • •
Irish
Foreign

S; ache
2,790

6,310

2,000

Eirdrirll.l"X:27..D.
The supply of Beasts on sale in to-day'smarket,lamongst
which were 10 oxen- from Span, was very moderate, the
time of year considered, and of but middling quality.
Notwithstanding that the attendance of buyers was
limited, the Beef trade ruled steely, and a good clearance
was effected, at prices fully equal to those obtained on
Monday—the primest Scots selling at 3s Bcl per Blbs.
The numbers of Sheep were considerably less than those
exhibited on Friday last. All breeds comnianded.a firm
inquiry, and the late improvement in value was well
supported. Prime Down Lambs moved off freely, at
very full prices. All other breeds were quite as dear.
Calves sold to a fair extent, at late figures. In Pigs,
scarcely any business was transacted. Mileh Cows sold
at from 141 to 181 each, including their small calf.
Per Blbs. to sink the offal.
s. d. to s. d,
a. d. to S. t 1;
inferior Beasts-- 2 4 2 6 Inferior Sheep .. -•2 10 3 0
Second quality •• •• 2 8 3 0 Second qual. Sheep 3 2 3 4
Prime large Oxen.. 3 2 3 4 Coarse-Iveollea ditto 3 6 3 8
Prime Scots ...• .. 3 6 3 8 Southdown Wether 310 4 0
! urge coarse Calves 2 6 210 Ditto out of the wool 0 0 0 0
t-rirne small ditto •. 3 0 3 8 Largo Hogs ... • 3 2 3 II
suckling Calves • .18 0 21 0 Small Porkers .... 3 li 4 0
Lambs ••—..• • • • 3 8 4 8 Quarter old Pigs ..16 0 20 9
TOTAL SUPPLY AT MARKET.
Beasts.
I Sheep. I Calves. I Pigs.
630 10,940 1 301 300
SCOTCH.
Beasts. I ShBleep. I Calves. I Pigs.
140 —
FOREIGN SUPPLY.
Beasts. I Sheep. I Calves. I Ph is.
120 1,400 202
NE W'G.A.TZ AND X. E ADENEAL X. .
These markets were tolerably steady, and late rates
were well supported.

- -
At per stone by the Carcase.
s. d. to s. d. 8. d. to s. d.
eef,inferior...... 2 2 2 4 Mutton, haferior .. 2 6 2 9
middling .... 2 6 2 8 middling.. 210 3 4
primelarge ••2 10 3 0 prime .... 3 6 310
prime small .. 3 2 3 4 Pork, 1arge........ 210 3 4
Veal ...... • 2 8 3 6 small ..... ..• 3 6 310
Lamb, 3s 61 t• 4s 6d.
330712,0UGS BOP Pt.B.II.3LET.
The prevailing fine rains having caused the bine to
grow rapidly in nearly she whole of our districts, the
demand for all kinds of Hops continue in a very inac-
tive state. As, however, holders, for the most part, are
firm, we have no decline to notice in the quotations.
The duty is freely backed at 180,0001. Mid and East
Kent Pockets, 81 to 101; Weald of Kent do., 61 to 71 7s;
Sussex do., 5/ 5s to 61 6s; Yearlings, 11 15., to 41 ; Old
Haps, 11 to 31.

FLOATING OF THE FOURTH AND LASF
TUBE OF THE BRITANNIA BRIDGE.
I\i ENAI STRAITS, THURSDAY AFTERNOON.—The
floating of the fourth and last tube, which may be said
to complete this magnificent structure, came off this
morning at nine o'clock, with perfect success. The in-
terest teat has throughout been associated with these
great engineering performances was probably heightened
on the present occasion from the fact of its being the
last great launching operation of the kind likely to oc-
cur in this country, and accordingly the concourse of
people present from all parts WAS estimated to be not
far short of the thousands that thronged the Straits on
the occasion of fleeting the first tube. Wind, wave, and
weather were perfectly propitious. Almost a dead
calm prevailed as the tide streamed up the Straits,
and the wind was of that soft south-western turn that
tended to assist and ensure the success of the opera-
tion. At the above hour Mr. Stephenson, M.P.,
Captain Claxton, Mr. Edwin Clark, Mr. Bodder,
Mr. C. 11. Wild, Mr. Ricardo, M.P., Mr. Lee, C.E.,
Mr. Borthwiek, C.E , Mr. Appold and others took their
stations on the top of the tube, which, amid the cheers
of the multitude, gradually, as the tide came up, rose
upon its cradle of pontoons. The men at the mooring
chains and capstans then, in obedience to the various
signalliugs and coloured flags, plied away at their posts,
until, at three minutes past nice, the mass, released from
its moorings, moved out into mid-stream, where, under
the troll of the vast and intricate tackle,tit made its way
for full forty minutes, until, in the space of another hour,
atter various nice evolutions, it came home and was
safely deposited, amid artillery and cheers, on the pro-
jecting plinths of the towers. The tide, taken at starting,
was 12 feet 8 inches, and it gradually rose until it at-
tained a maximum of 17 feet. The total distance tra-
velled over, from the starting point on the Carnarvon-
shire coast to the base of the towers, was upwards of
300 yards. At about four minutes past ten, just as the
operation was completed, the tide turned, and it was
high water at thirty-two mamtes past ten. The velocity
arrived at was nine inches per second, end this was ad-
mirably regulated by Mr. L. Clerk, who had charge of
the pontoons, by the following ingenious contrivance,
which had all the effect of a break upon the progress of
the great iron burden. A man stood by whose duty it
was to continue paying out a marked cord or line, and
every time he came to a shark, each being twenty feet
apart, he called out the number of the seconds occupied
iu traversing the space, and thus the speed was ueitormly
kept throughout the entire operation. The length of
the tube floated was 470 feet, its weight 1,690 tons, the
number of pontoons 8, their aggregate burden 2,750
tons, the number of men engaged in the floating 685.
During the operation the spectators were permitted to
stand upon the top of the tube already in use, and which
was covered with thorn from one end to the other, the
usual trains thundering through underneath.
The arrangements for permanently depositing the
" last of the tubes," floated to-day, beside its companion,
on the Carnarvonshire side, are all completed. The hy-
draulic presses are on the towers, and will commence
lifting almost immediately. The tube that has b- en In
daily use since the 18th of March last has presented to
the mo-t careful observation no change or alteration up
to this time. The deflection found to be caused by the
passage of ordinary trains daily is two-tenths of an inch,
and some extrem. ly heavy coal trains have deflated it
as much as half an inch. The effect of juiniug the seve-
ral tubes together and lower ing the opposite end has been
to raise them four inches, so that the most heavy trains
do not counteract more than one-eighth of the advantage
that was gained by this process.
The following is the report of the Government In-
spector, Captain Symonds, of the Royal Engineers, to
the Railway Commissioners on the bridge
"I have inspected the Cheater and Holyhead Rail-
way from Bangor to Llantair, a distance of 3 miles 35
chains, including the Britannia Bridge across the Menai
Straits. This magnificent structure, which far sur-
passes in magnitude any engineering work of the sort
constructed up to the present time. has been so often
described that I shall forbear entering into details. Suf-
fiee it to say that it traverses the chasm between the
island of Anglesey and Carnarvonshire at an altitude of
upwards of 100 feet above high watermark, the space
being divided into four spans, the two in the centre of
460 feet, and the two at the ends of 230 feet, by throe
towers or piers, the one on the Britannia Rock, which
gives its name to the bridge, and the others adjoining the
Carnarvoa and Anglesea shores. These towers, which
with the abutments, are constructed in masonry of large
dimensions, support a continuous wrought iron tube,
near 5,000 tons in weight, 1,511 feet in length, 14 feet
8 inches in breadth, and 30 'feet in depth in the
centre, diminishing to 23 feet 6 inches at the ends,
through which the trains with locomotive engines pass
over the railway laid within it. A provision is made for
variation in the length of the tube, due to the changes of
temperature, by bending it in the central or Britannia
Tower, and allowing it to move on rollers in the other
towers and abutments, with adjustments of a correspond-
ing nature over the rails. The great difference between
this bridge and that at Conway is that it is of
more than one span, of which advantage has been taken
by the continuous bearings to bring the top to a state of
tension to a considerable extent, reducing in a great de-
gree, the central strains which would otherwise bo
brought on the metal. It is difficult to define the exact
amount of this benefit, but it is undoubtedly consider-
able, and has been estimated by Mr. Stephenson as re-
ducing the greatest strain upon the metal from 5 tons
3 cwt. to 3 tons per square inch, or increasing the
strength in a like ratio. Judging, therefore, from
prior experience of works constructed of this mate-
rial, and having full reliance in the care and skill dis-
played in constructing this immense tube, I feel assured
that every confidence may be placed in the security of
the structure for the purpose of the transit of railway
trains. 'With a heavy train (228 tons) of goods wag-
gons, such as will seldom be used its the ordinary traffic
of a railway, and certainly not in weight upon one spar,
I ascertained the deflection of the tune over one 43f thed
large spans to have been less than .78 ef an inch, and
over the other '65 of an inch; and that theeffect of the
load produced a corresponding relief to the otherlwBimi.
caused it to rise to the extent of .19 of an inch.n
t in the tube
ler effect was perceived to a
hea-
viest practical load which can be brought upon
over the smaller spans at the ensdlsig,twithieclhtemadethethemhona inch. As.)et only one tube
Isyhdeeentlecetreedcttehde, tath ofan,
for the distance across the
hnyglae lice. It
sltusthiooLueldd reeteotmhe-
men
Straditst,htahte rtahiilsw abye
place, whose duty would be to travel on every engine
isw worked eads 1
that pass over the single portion of the line, and
that shallnoengine should be allowed to pass along it with-
out having the man upon it. Provided some matters
(as to meeting points) are attended to, I am not aware
of anything to prevent the opening of the line and bridge.
" J. L. A. SYMONDS, Captain Royal Engineers.
"To the Railway Commissioners."

Mr. Wetherall and Mr. Baxter had an interview
with the Commissioners of Railways yest)rdar
their dice in the Board of Track,

CORN EXCHANGE.—(FRIDAY.)
During the ptesent week, a full average quantity of
English Wheat-2,150 qunzters—has come to hand for
market cetistwise. By laud carriage and sample,
the receipts have slightly increased. The supply on
offer to-day—and which was partly composed of that ex.
hibited on Monday—was by no means large. Owing to
the changeable state of the weather, the factors were :
somewhat firm; but, as the millers operated with great
caution, only a modsrate business was doing in home.
grown Wheats, at about stationary prices. The imports
of Fureign Wheat have been confined to 9,350
quarteri. The few trausactions concluded in fine
dry qualities were at full rates of currency. Ia .
the middling and inferior kinds, which were
plentiful, comparatively little was doing: Very little
English Barley is as brought forward, and the
supply of Foreign was smaller than for some time put.
Most kinds moved uff slowly, yet prices were supported.
We had only a liwitud quantity of Malt offering, yet
the demand was in a sluggish stat,,, at last week's cur-
rency. Good sound Oats were scarce, and the turn
dealer. Secondary qualities sold at late rates. Beans,
Means, Indian Corn, and Fiour without alteration.

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