The Express.
London, England, 1853-06-20 00:00:00

TRIAL OF THE BO.VERANO SCREW PRO-

FELLER.

PORTSMOUTH, Juni 18.
A second trial of the Bomerang screw propeller,
the invention of Lieutenant-Colonel Sir Thomas Mitchell,
Surveyor-General of New South Wales, and the ides of
which was suggested by the Australian instrument of war
of the same name, was made today. It will be recollected
at the first nt' in the early part of May one of the
blades snapped In half at the outset, and so brought the
trial to a premature does. This accident was attributed to
the inadequacy of the strength of the blades for • ulna so
heavy as the Conflict, to which it was fitted for trial ; the
weight of the Bomerang being only 1 ton 19 cwt., whereas
the Conflict's common screw was nearly 4 tons and a half.
This fault was now rectified, although the Bumerang tried
to-day only weighed 2 tons 19 cwt. The first propeller on
this invention tried was a " modified " one, that tried to-
day being • " concentrated " one (each baying two blades),
the difference betwen the two being that whereas in the
first-named • portion of the blades was eat of to enable the
propeller to be fitted to the Conflict's narrow aperture ; in
the latter there is a continuation of these blades in stricter
accordance with the instrument used by the natives of New
South Wales.

In order to fens an accurate comparison between the
merits of the Bonterang and the ordinary screw used in
the navy, • trial of the Cootie* common propeller was
made on Wedneeday at the mewed mile in Stokes's Bay,
when the mean average of several runs she then made was
found to show a speed of 9.0613 knots per hour. To-day the
Conflict, under the command of Capta.n Hendersos, C.B.
of the Blenheim, having Sir Thomas Mitchell and several
scientific gentlemen on board, went out to Stokes's Bay at
eight o'clock, and made four revs each way. The new in-
vention had to contend with a strong wind against Mr in
one direction, and a strong tide la the other, either amount-
ing in the opinion of nautical men to • restates.), equal to
• quarter of a knot. The man average of the nuts
mute under these eircumstames gave a speed of
9.126 knots per hour. This did not come up to
the expectations of the inventor, although the as-
(avowable character of the wind sad tide to-day
as compared with Wednesday mast no doubt have told die-
Mventsmously. Otheradventages, however, wen claimed
fer the Himerang, among which was the that that it at
tained the above speed with eight revolutions per minute
less than the number required by the common screw to
produce the lessee speed, with mare favourable wind and
tide—this difference causing, it is computed a saving of
one-eighth in the quantity of fuel consumed. It is also n-
pertod the Coniliet was quite free from vibration during
the working of the Bonierang—an advantaje, if sustained,
of great value. It may be added that the Cotdiet is by
no means a suitable vessel to try the qualities of either the
Beenerang or the common mew ; she is one of the old
school, en* a round bow, and not at all calculated to mu-
peas sue knots, whatever screw may be used.

UNEXPECYKD ROYAL

four o'clock

--
es Theegisy &heroism a carriage diem p dose to the
grime ef Mr. Mae, the whit gerimeg, as the Lower
WetMehreed. wieteirdes throe Wise, who slighted in
esseeqesese *fief of the bogie) beaky reerived amiss slight
=. width wet talus away
_he impedes. One of the
Mr. hat Imes sea-in-law) at the gate
inemisetTill: ilea if he !mew of any quiet retired pica
they -weld walk is till the bane returned. He,
not keetrimi the illustrious persosagre, told them there
was so Mem close there, but if they would like to
walk in the grounds of a market gardener they were
quite welcome; which limitation they aompted, and
requested that he woelii essempany them, when their at-
tention was drawn to the 1111110iat portions of vegetation in
the garden, particularly the vary Ins &swains beds, with
which, after witnessing the process of tatting, they ap-
peared much delighted. After various walks themes the
grounds, the servant ameemmed M ler royal highness the
carriage was ready, wins the IlleMises personages proved
to be her Royal Highgate the Deattem of Cambridge, Prin-
ems Mary, and the Dashes of ors Smelts, whe
ea their departure very peeteedywaked three bouquets
of Bowen from Mrs. Hunt and NM mass, with ea inti-
mation, from the reception they heed, it might not be the
teleils* of their visit.—KentasA Minywry.
WELLINGTON TESTIMONIAL.—THE WELLINGTON
AND UNITIID BZUVICIS_ BERIVOLNAT

Saturday a touting of the webecriben to this proposed in-
stitution wu held at Willis's Roams, St. James's, for the
purpose of promoting the fouodation of a charity foe the
relief of veteran non-commissiusd aed petty °Sous,

soldiers, sailers, sad marines. Lord Erskini lithe 'hair.
There were only seven persons present, sad of these one
stated that he attended under the impression that it was to
be a meeting of the seaseribers to another institution 'mer-
les the same name. The only business transacted was the
reading of the minutes of previous committee meetings, and
the passing of a resolution proposed by Lord Clarence Paget
and seconded by Sir J. Ross, appointing an executive coun-
cil centistinr of the following noblemen and gentlemen."
The name% to be supplied at a future period. Mr. H.
Tentmay, jun., the secretary, stated that the funds sub-
scribed in the country bad not yet been paid in to the Lon-
don banker, but when all was collected the sum would
amount to between 2,0001. and 3,00111.
DEA= or MR. MAURICE O'CONNELL, M.P.--The
death of this gentleman took place suddenly on Friday
sight. at kis apartments in 22, Half-moon.strest,Piceadilly.
Mr. O'Connell appeared in his usual health in the House
of Commons on the prowling night. On Friday morning
he was found by his servant to be taken suddenly ill from
an apoplectic attack. Immediate medical assistance was
called in, and more than two or three medical friends saw
him in the course of the day. Towards evening, however,
be began to sink rapidly, and be breathed his last at mid-
litThe deceased gentleman was the eldest eon of the
elebrated Daniel O'Connell. After having represented
the county of Clare from 1830 to 1832, he was returned
Ira the borough of Teske in the latter year. and continued
represeet it for the last twenty years. He will probably
be succeeded as member for Trales by a member of hit
family. His eldest son, a very One boy, is a midshipman
in the Royal Navy, not long returned from tho West In-
dies in her Majesty's steam frigate, Dauntless, where he
was one of the many who suffered from the yellow fever in
the West Indies.