The Sun.
London, England, 1842-06-09 00:00:00

39, ALBEAIARLE-STREET, PICCADILLY, (directly
opposite the York Hotel), and may be had also at
76, KING WILLIAM-STREET, BANK of ENGLAND.
QIGHT AND HEARING TESTI-
MONIALS on the Messrs. S. and B. SOLOMONS'
newly-inverted SPECTACLE LENSES and INVISIBLE
OPERATIVE VOICE CONDUCTOR for Deaf Persons.
" We, the undersigned, have been for some time making
use of Messrs. • Solomons' newly.invented Spectacle Lenses ;
the astonishing relief they afford to imperfect vision gives
them the decided preference to every other kind of Lens
—the clearness of the transparency brings every object very
distinct, and enables individuals to view the most minute par
tide with perfect =weep They are, particularly pleasant
by candle light, as they appear cooling to the sight, and soften
bright and brilliant lights:--
James Blundell, Esq., M.D., 1, Great George-street, West-
minster.
George G. Sigmond, Esq., M.D., 24, Dover-street;
T. S. Pettigrew, En., Surgeon, F. R. S., Saville-row.
John Ramsbotham, Ls q„ M.D.,Broad-street-buildings.
Anthony White, Esq., Surgeon, 3, Parliament-street.
John fitibpef, Surgeon,l9, Newington-place, Kennington
Frederick Leighton, Esq, M.D., 7, Upper Gower-street.
Messrs. Griffiths and Duncan, Surgeons, 3, Leadenhall-street.
W. Day, Esq., Surgeon, Isleworth.
T. Daldy, Esq., Surgeon, 33, New Broad-street.
R. H. Lucas, sq., M.D., Exeter.
.1. Taylor Gordon, Esq, M.D.
Wm. Bowie, Esq., M.D., Bennett-street, Bath.
C. Heywood, Esq., M.D., Blandford.
Henry Lawrence, Esq., M.D., Tenby.
Wm Jeafreson, Esq., Surgeon-oculist, 21, South Audley-street.
.D. Robinson, Esq., M.D., Cheltenham.
C. Shillito, Esq.. 111.D.,_Bri;hten.
William Conolly, Esq., M.D., Cheltenham.
E. H. Allnatt, Esq., M.D. Wallingford.
Thomas Willis, Esq., M.D., Brighton
G. Griffiths, Esq., Serge.., Hammersmith.
Taut Kenderick, Esq., Surgeons Manchester-street, Mandan
ter-square.
Charles Tunally, Esq., Surgeon, Camden-town.
H. Colebourn, Esq., Surgeon, 28, Harleyford-place, Ken-
nington.
N. M•Cann, Esq., Surgeon, 50, Parliament-street.
Samuel Banner, Esq., Surgeon, 26, Berkeley-square.
W. Jones, Esq., Surgeon, 15, Lower Brook-street, Grosvenor
square.
W. English, Esq.., Surgeon, Denmark-h;11.
A. Barklemore, Esq., Surgeon. 10, Charlotte-st., Bloomsbury.
E. Stoddart, Esq. ,t Surgeon, 32, Golden-square. •
J. H. Walker, Surgeon, 23, Charlotte.street, Bloomsbury.
C. Higham, Esq., Surgeon, 46, Davies-street, Berkeley-square
Edward Nason, Esq., Surgeon,Nuneaton, Warwickshire."
In placing the above list of Testimonials before the public,
the Messrs. Solomons, Opticians and Aurists, state that their
INVISIBLE OPERATIVE VOICE CONDUCTOR, by
which thousands of Deaf Persons have been greatly benefited,
is not larger than a seven-shillings piece, and when fixed into
the cavity of the ear is-soft and easy, and not more uncomfort-
able nor perceptible than having a piece of wool in its place.
By its use the faintest whisper at a public assembly is heard
wit'\ distinctness.
These important new inventions are patronized by their Ma-
jesties the King and Queen of Hanover and their Royal High-
nesses the Princesses Augusta and Sophia, her Serene High-
ness the Princess Esterhazy, the Princesses Mary and Rosa,
her Grace the DuChess Dowager of Bedford, and their Graces
the Archbishop of Canterbury, the late Duke of Norfolk, the
Dukes of Devonshire, Argyle, Manchester, and Marlborough,
Lord Hill, &c. &c. •
Observe the Messrs. Solomon; state that they have no con-
nection with persons of the same name in Ireland and Scotland.
and that they do not employ any Travellers or Agents; the
genuine articles are only to be had In. London, at Esta-
blibhments, 39, Albemarle-street, Piccadilly, opposite the York
Hotel, and 76, King William-street, Bank. .

NEW GUNS' IN WAR STEAMERS.

The late experiments at Woolwich, and the forthcom-
ing ones at Deal, for the purpose of testing the superi-
ority of the new guns, excite just now considerable in-
terest throughout the profession. No greater proof of
this can be afforded than the numerous inquiries we have
received, not only from officers who have recently served,
but those who have been on half-pay a considerable time,
and,are probably no longer fit for active service. .
Stime of these latter, who have not possessed the
op-
portunities now available for acquiring proficiency in
naval gunnery, express their surprise at the great weight
of the 68-pounders on board the Geyser; and are anxious
to know what benefit is expected to compensate for this
inconvenience. The reason is evident: the intention be-
ing to produce a great range, it cannot be accomplished
without large charges of powder, hence the necessity for
casting the gun much heavier than was the formerpractice.
The old 68-pounder carronade (or " Smasher," as it was
originally called) weighed only about 36 cwt..; the full
charge was 51b.1120z., and the range (greatest) about 1,300
yardS ; but Colonel Dundas's modern gun of that cali-
bre, owing to its weight and form, is capable of bearing
a charge of 201 b. of powder, and to range a shot up-
wards of 4,000 yards, being considerably more than any
piece of artillery that we hitherto poSsessed—while Mr.
Monk's gun of newt., throwing a shot of 561 b., is little,
if any, inferior in this respect to the former, which
weighs 113 cwt. The principal advantage of the Dundas
gnn is, its being adapted to an existing calibre ; whereas
Mr. Monk's shot of 561bs. is a deviation from any calibre
we already possess.
For steam-vessels, guns possessing the longest range
are the most desirable, because not only are they calcu-
lated to batter a town from adistance beyond the reach
of ordinary cannon, but also because the shot has greater
velocity, and consequently the power of penetrating
deeper at low elevations, and thus producing more cer-
tain and destructive effect than when it is necessary to
elevate greatly in order to reach the object.--Naval and
Military Gazette.

ADVEUTISEME; T. —D ENTITION.—There is perhaps no
nplaerat
to
or ftht eh e humanTeeth ;
for while among the animal races, some frame which more admirably exemplifies the
wisdom and bounty of the Creator than the structure and arrange:.
tribes are endowed with teeth which allow them to live only on
vegetableeulate,l
ondly foriet;
animalothers being
man is provided with teeth which furnished with an apparatus cal
render him omnivorous, and enable him to live either on animal
or vegetable substances, as either may be most conducive to his
well-being. The embellishment, care and preservation of these
important parts of the her an economy are objects highly im-I
portent; and, among the various preparations offered for the
purpose, the ( ?dente, invented by Messrs. Rowland, of Hatton-.;
garden, stands unrivalled as a dentifrice, excelling all others inl
it= cAp3l)lity of . embellishing, put ifj lug, and preserving the 1
t,....th ril_i gdv:,:c - '
Ihe Duke of Wellington left town yesterday for Windsor;
Castle on a visit to her Majesty.