The Sun.
London, England, 1848-09-19 00:00:00

NORTHERN ITALY.

According to the correspondent of the Paris Presse,
it would appear that difficulties have unexpectedly
arisen between the mediating Powers and Austria
with regard to Venice. That journal publishes the
following communication :
" A difference has just arisen between the Imperial
Cabinet on the one part and the Cabinets of France
and England on the other, relative to the non-fulfilment
of certain clauses of the armistice, concluded at Milan on
the 9th of August last, by the Sardinian and Austrian
Plenipotentiaries.
" It is known that according to articles two and four
of that convention, the city of Venice was included in
the number of places which were to be delivered up to
the Austrian troops within three days after the ratifica-
tion of the armistice by the King of Sardinia. That ra-
tification having taken place on the 10th of August.
Venice, according to the above stipulations, should have
been evacuated by the 13th at the latest.
It would occupy too much space to recount the nu-
merous applications made by Marshal Badetzky to King
Charles Albert relative to the carrying out of these con-
ditions of the armistice. On the demand of Sir R.
Abercromby, the English Minister at Turin, the King.
Charles Albert, at length sent orders to Admiral Albini
and General Marmora to evacuate Venice.
" But here an unforeseen difficulty arose. At the
same time that the Austrian Government received from
Admiral Albini the official assurance that the fleet and
the Sardinian troops should leave the place, the same
Admiral sent a messenger to Trieste, saying that the
fleet would not leave the waters of Venice, without an
assurance from the Austrian Government, that no at-
tack should be made against that city by the Imperial
troops.
" This formal declaration of the Sardinian Admiral
coincided with the protest made by the representatives
of France and England at Vienna, in case of hostilities
commencing against Venice after the departure of Ad-
miral Albini. In a note, dated the 7th inst., and ad-
dressed collectively by Lord Ponsonby and M. de La-
tour to the Baron de Wessenberg, these diplomatists
declared that by the sole fact of having accepted the
Anglo-French mediation, Austria was tacitly inter-
dicted from the right of recommencing hostilities
against Venice, the special object of the mediation
being to put an end to the war by the use of conciliat-
ing means.
" The reply of the Cabinet of Vienna was not long
waited for on this occasion, and if we are well-informed
it was to the following purport:—
" The notification of the armistice of Milan was a
fait accompli at the period when Charles Albert and
the Court of Austria accepted the Anglo-French me-
diation. Consequently the acceptance of the media-
tion could not by right have any retroactive effect on
the stipulations of the armistice. The Imperial Go-
vernment doubtless admits the principle of the status
quo hs the basis of the negotiations to be opened with
the mediating powers; but it cannot admit any other
status quo than that which was regulated by the ar-
mistice itself, and the consequence of that act should
be to replace the belligerent parties in the same
position with regard to territory which they occupied
at the commencement of the war. That being the
case, Austria feels herself justified in imposing on
Venice the stipulations of the armistice, from which
Ring Charles Albert has already reaped considerable
advantages, particularly the restoration of his park of
artillery, abandoned by him at l'eschiera, and the free
passage granted to his troops.
" from these motives, Austria, in her turn protests
against the obstacles which the mediating Powers would
throw in the way of the accomplishment of the armistice
of Milan, and she reserves to herself with regard to
Venice, full liberty of action, the acceptance of the me-
diation in her opinion in no way destroying previous
rights given her by the armistice.
" This counter protest of Austria appears the more
serious, as the armistice of Milan expires on the 21st,
and King Charles Albert and Marshal Radetzky are pre-
paring to resume hostilities with renewed vigour, unless
before the above date a prolongation of the armistice
should not be agreed upon.
" In this state of things the French Government has
invited the English Cabinet to unite with it in pressing
forward
_ the negotiations. In consequence of the close
the Parliamentary session in England all the Miai-
!tererihave retired to their country seats, but Lord Pal-
ton has promised to return to town on Monday next
tineehatinvseof overcoming
aconference with M. de Beaumont as to the
has thus met the difficulties which the mediation
with at its outset."
Sr-

.EAM•VESSEL
Allegheny, unite UN dSt A NEW PRINCIPLE.—The
ates steamer, which sailed from
Rio on the 27th June for River Plate, is upon a new
principle, the invention of her captain (Hunter). her
wheels work horizontally, seven feet below the surface
of the water, within the vessel,nc near the midship section;
and the vessel's sides aree shut up, when under
canvass alone, by a slide which dropped. from within
her. The object desired to bec obtained by th© plan ex-
uset of canvass with-
pendent of the canvass, a combination eaf
powers
of sailing and steaming, and the bo?lerthe two-
chinery, and propellers, being secure frorna' telingtelhaffee'crat of
shot by means of a "shield deck," patented b
tain, and the whole beirg below the water
the power of steam is sought to be adapted to vessels us
intended to form the line-of-battle, and the cheaper
moving power of the wind is left as effective as though
she were not a steamer. She is built of iron, and h( r
funnel can be lowered to the deck, as it falls on a hinge
And goes into a bed of wood prepared for it ; it is
telescopic. She is barque-rigged; length of spar deck,
185 feet; extreme breadth, 34 feet; depth of hold, 20
feet; armament, two pivot guns; pierced for snd will
tarry six long 32-pounders; two cylinders of 60-inch
diameter, four feet stroke, placed horizontally, one at-
tached to mach propeller • fire service of boiler, 4,000 feet.
Her buildeT is quite sanguine of success.