The Sun.
London, England, 1850-12-21 00:00:00

NAVAL INTELLIGENCE.

INTERESTING SCREW-TRIAL AT PORTSMOUTH.--The
Hogue, 60, steam guard-ship, Captain Macdougall, has
recently been tried under steam at the measured mile in
Stokes Bay, to determine the relative effects of two
screws differing only in their pitch. In the first trial
the pitch of the screw was 21 feet, and in the second it
was only 19 fee, the diameter of each screw being 16
feet. In the first experiment the mean speed of the en-
gines durit:g six trials was 47.16 strokes in a minute ;
and the mean speed of the ship in the same trials was
at the rate of 7.698 nautical miles an hour. In the second
experiment the engines worked up to a mean speed of 56
strokes in a minute, and the mean speed of the ship in six
trials was at the rate of 8.45 nautical miles an hour. The
advantage is thus shown to be in the screw with the
smaller pitch, by its giving the ship an increase of speed
at the rate of three-fourths of a nautical mile an hour.

APPOINTMENTS.
Mr. Joseph Pinhorn has been formally appointed
storekeeper of Clarence Victualling-yard ; Mr. Grant
appointed comptroller of the Victualling and Transport
Service at Somerset House, vice Meek, superannuated.
Mr. Robert Laws, first-class olerk at Devonport dock-
yard, as was anticipated, has been appointee' store-
receiver at Woolwich dockyard, vice /Inborn. Mr.
Laws was secretary to the late admiral-superintendent
at Devonport dockyard.
Muter W. R. Orme (1846), late of the Albatross, 12,
to the Amphitrite, 25, fitting at Patamouth.
Carpenter—John Grines, to be acting.
PROMOTION.
Second Muter Edward Youell (1846), of Inca, flag-
ship, Mediterranean, bas been promoted to the rank of
master, vice Dowers, late of the Bellerophon, 78, who
died within the limits of the Mediterranean station.
This promotion is in every way creditable to the judg-
ment of Sir William, as Mr. Youell is a very deserving
officer, having during the period be has been in the ser-
vice given the utmost satisfaction to all the captains
under whom he has served. Mr. Yonell was engaged
in the operation on the coast of China while belonging
to her Majesty's ships Serpent and Thalia ; since then
he has served under the flag of Sir William Parker, in
her Majesty's ships Hibernia and Queen. Mr. Yonell is
the son of Lieutenant Youell (1812), of Plymouth.
Lieut. Bosville J. Wilson (1832), Admiralty agent in
China packets, son of the late General Sir Robert F.
Wilson, died at Hong-Kong.
THE AMPHITRITE.—With the exception of the ap-
pointment of Captain Frederick to this ship, who has
taken up his commission, we are really not able to an-
nounce the name of one single officer who has followed
his example. Mr. Williams, the master, has declined
the appointment, and another has been named in his
place. Mr. William Morgan, the paymaster and purser,
also declines serving, for what reason we cannot tell. It
is really high time for the Admiralty to insist upon offi-
cers taking up their appointments when nominated, un-
less they are physically incapacitated from serving.
PRIZE MONEY FOR THE DART.—Halford and Co. have
given notice to the officers and crew of the Dart, Edward
Hill, Esq., lieutenant commanding, that an account of
bounty for tonnage received for the Despigue, captured
11th May, 1849, will be forthwith deposited.
PRIZE MONEY FOR THE CvcNET.—Messrs. W. and
E. Chard have given notice to the officers and crew of
the Cygnet, Commander David Robertson, Esq., that an
account of the sale proceeds of the Volador Brazilian
brigantine, and of the bounty money upon the tonnage
and slaves captured on board the said brigantine on the
24th May, 1849, will be deposited, &0., before the 20:1
January ncxt.
THE GRAPPLER, STEAM-VESSEL.—Ocomanney, Son,
and Co., have given notice that an account of the ton•
nage bounty received for the capture and destruction of
the Brazilian schooner Esperarca, No. 2, on the 23d Fe-
bruary, 1849, by the Grappler, and also of the net pro-
o.::eds and tonnage bounty received for the capture of
the Brazilian schooner Esperanv, No. 1, on the 17th
March, 1849, by the same ship will be delivered into the
registry. _

Amphitrite, 25, Capt. Frederick, is ordered to be fitted
±,r the Pacific station.

DEVONPORT, THURSDAY.—We have a change of
weuther to thy—wind N.E. Sailed, the Advice, for
It ciand. Duck, lighter, which has been wind bound,
sailed to-day for Pembroke. Rochester lighter, Sud-
wicks master, sailed with stores from this yard for
Sheerness and Chatham.

DOCKYARD.-Wiliium Macey, a police-constable, was
detected on Wednesday evening, attempting to embezzle
copper. The Commodore being absent on leave, he was
banded over to the civi! power. He was ex2mined on
Thursday before the magistrates at the Town-hall, and
committed to take his trial at the next sessions.

PORTSMOUTH, FRIDAY.—The Independence, Ameri-
can packet, is embarking provisions and will sail for
New York this ev,ning.

RAILWAY SHARE MARKETS.
BRISTOL, DEC. 20.
STOCK EXCHANGE.—The market was moderately active
and firm to-day. The transactions were as follow :—Bristol
and Exeter, 76%—Great Western, 77%
LIVERPOOL, Dxe. 20.
STOCK Exertaxox.—The share market was not so active
to-day, and prices are rather lower. The transactions were as
follow:—Caledonian, 10%—Chester and Holyhead, Prefer.
ence, guaranteed 51,e per cent., 14 3-16—East Lancashire,
12%—Lancashire, and Yorkshire, Consolidated, 5814—Ditto,
6 per cent. Preference, 13 c.—Lancaster and Carlisle,
Thirds, 6 p.—Leeds andThirsk, 14 7-16—London and North.
Western, 1261 Ditto, New Quarters, 4%—Midland, 48%
—Ditto, Halves, 19 7-16 dis.—Ditto, Consol. (B. and D. ),
25% Shrewsbury and Birmingham (B), 4b South.
Eastern and Dover, 23V—York, Newcastle, and Berwick,
19—York and North Midland, 23%—South Staffordshire,
3 3-16 dis.—Boulogne and Amiens, 9!,2 —Dutch Rhenish,
dis.—Northern of France, 3/4 dis.—Rouen and Havre, 10%
BIRMINGHAM, DEC. 20.
STOCK EXCHAIMIL—The market was not so active to-day,
but there was no important alteration in prices. The trans-
actions reported were—Shrewsbury and Birmingham (A),
534 dis.—Ditto (B), 5 dis.—South Staffordshire, 31. 30*
9d. dis.

YORK, DEC. 19.
STOCK EXCHINGX. —The transactions to-day were as
follow : —North British, Preference, s—York and North
Midland, 23%.

DEATH OF COLONEL WILLIAMS.—II i 8 with the
deepest regret that we record the death of a gallant
soldier and a true patriot. Colonel George Williams,
late M.P. for Ashton, died yesterday morning, at half-
past six o'clock, at the age of 87, at his residence in Wool-
ton.—Liverpool Mercury of yesterday.
MR, DISRAELI'S CHARLES I.—We are requested
to state that Mr. Colburn has this day published " The Life
and Reign of Charles 1.," by J. Disraeli, a new edition, re-
vised by the author, and edited by his son, B. Disraeli,
M.P., in 2 vols. Bvo., price 28s. bound. Also just published,
2. Historic scenes, by Agnes Strickland, 1 vol., with Por-
trait, 10s. 6d. 3. The eighth edition of Mr. Warburton'a
Crescent and the Cross, in 1 vol., with illustrations, 10s. Gd
4. Germania; its Courts, Camps, and People, by the Ba.:
roness Blaze de Bury, 2 vols. Bvo. 5. The Rev. R. Mil-
man's Life of Tasso, 2 vols., 21s. 6. The History of
Religion, by the celebrated John Evelyn, 2 vols., 21s. Also
just ready, Captain Crawford's Reminiscences of a Naval
Officer, with Sketches of Admirals Sir E. Owen, Sir B. Hal-
lowell Carew, and other distinguished Commanders, 2 vols.,
21s.