The Sun.
London, England, 1851-08-14 00:00:00

The following officers passed the college examination
on 'Tuesday, namely—
For Lieutenants— Messrs. Roche, Collinscn, Pim,
Clark, Gooch, Barnes, chimmo, Cowper D'Arcy, C.
11. Johnstone, and Nelson. .
For Masters—Mr. W. F. Parsons, J. A. Hall, G.
IL Allen, W. D. Strong, R. P. J. Simpson, A. 0.
West, I. J. P. liitchfield, and George Gilpin.
The Lords of the Admiralty, S.r F. Baring, Ad-
miral Dundas, Captain Milne Captain Hamilton,
Colonel Greene, Admiral Berkeley, Mr. Cowper, &c.,
arrived at the dockyard this morning at eleven o'clock,
and, accompanied by the admiral's superintendent,
Captain Mould, R.E,, Mr. Finchem, Mr. Murray,
and Mr. Lambert, proceeded to the chymical depart-
ment to inspect the model invented by Mr. Hay (for
auxiliary screw- vessels) to supersede steam. As the
motive power (the galvanic battery) is to supply the
place of the boiler the machinery will be very much
less cumbersome, occupy very much less space,
and be less complicated than the ordinary steam-en-
gine ; great space will be obtained for provisions, &C.,
now occupied by the coal bunkers, steam funnel, and
casing, &c. Their Lordships felt very much inte-
rested, and remained a considerable time inspecting the
arrangements, end paid much attention to the obser-
vations made by Mr. Hay, who merely asked their
Lordships' permission for trifling alterations to be
made in the fly wheel and beam, and stated that
nothing more would be worth while doing until the
economical battery he had at present under trial had
succeeded ; that all battery arrangements brought
under his notice had been carefully tested for this
purpose, and any others proposed he would willingly
submit to the test to ascertain their value as applied
to give motive power, which would be attended with
very little cost by his power-testing machine. In the
battery this morning used the chief consumption was
in the seawater infused as one of the elements of the
battery arrangements. They next inspected the regu-
lating and temporary galvanic protectors for ships' cop-
per, which, although upon the principle of the late Sir
H. Davy, by certain improved modifications get rid of
the most formidable difficulty that occurred in the use
of protectors—the fouling of the ships' sheathing, which
on Mr. Hay's modification is avoided. Some experi-
ments illustrative of the cause of decay in copper
sheathing were exhibited to their Lordships. The First
Lord, accompanied by the Admiral-Superintendent,
next inspected the schools for the shipwright appren-
tices, and afterwards returned to the central school to
examine the pupils. Admiral Dundas and the other
Lords proceeded to the muster-office, and one poor
fellow (a labourer) was discharged, having been
found by Rear-Admiral Berkeley asleep. The Board
re-met in a body at the Port-Admiral's at luncheon
after the muster, where 2,390 men passed before
them, who, on passing muster, were dismissed for
the day, as usual on Admiralty visits. Their Lord-
ships inspect the ropery, the storekeeper's department,
&c. After luncheon the Board embarked in their
steam-yacht, the Black Eagle, and went out to Spit-
head to inspect the Vengeance, 84, Captain Lord
Edward Russell, with which ship we are assured the
whole party expressed the highest satisfaction. No
manning yards or saluting took place on the occasion.
They afterwards took a cruise down the Solent in the
Black Eagle, and overhauled from her deck the ap-
prentices' brig Rolla, Lieutenant Fenwick, com-
mander. After this the Black Eagle returned to
Spithead, and thence into harbour. The Board
landed in the Port-Admiral's barge at the Sallyport-
stairs, went to their hotel to transact business, and
then proceeded to the Admiral-Superintendent's to
dinner.

Her Majesty, in the royal yacht Fairy, accompa-
nied by the Prince Consort and the Royal children,
came up to Ryde at five this afternoon, from Osborne,
and honoured the Hyde Royal Victoria Yacht Club
with the Royal countenance for some time, much to
the delight and amusement of the Royal family.
The Odin steam-frigate is ordered to be tempora-
rily commissioned at this port for the conveyance of
the Russian Ambassador to St. Petersburg. Com-
mander Sir 'William Wiseman, of the Excellent, is
to have the command of her.

The Devonshire and Alfred Indiamen arrived a
Spithead to-day from the Thames.

APPOINTMENTS.
WooLwicrr, AUG. 13.—Surgeon-Superintenden
Harvey Morris (1838), to the Rodney hired convict
ship.

Surgeon Henry Trevan, M.D. (1846), to the
Virago steam-sloop at Devonport.
Pursers Benjamin Wickham (1835), to the Rodney,
90, at Portsmouth; Thomas Kains (1813), to the
Victory flag-ship at Portsmouth ; and Henry S.
Hooper (1846), temporary, to the Victory.
Gunner Robert Taylor, to the Rodney.
Boatswains John Collins, to the Rodney, and
Richard Davis, to the Grecian (12) sloop, at Devon-
port.

Carpenters William Ellicott, to the Rodney, and
Edward Parker, to the Grecian.

Lieutenant Hervey G. St. John Mildmay (1844),
is appointed to study steam at the factory at Wool-
wich dockyard.