The Sun.
London, England, 1840-05-14 00:00:00

THE Magnificent FIRE CLOUD.—Dr.
LARDNER'S superior Models of the Steam Engine,
including his Sectional Model, have been purchased for the
Institution. Mr. Green's BALLOON and his Guide Ma-
chinery, Mr. Cocking's Parachute and c.;arnarin'slmtrated ;
weaving splendid specimens of Spun . Glass and Silk by a
Jacquard Loom, (Messrs. Williams and Sowerby, patentees);
Mo.tels and Engines in motion ; two Power Looms worked by
Steam ;'‘ beautiful specimens of Electrotype and Daguerreo-
type; Harris's Lightning Conductor Illustrated; Blowing up
the Royal George under Water, on Colonel Pasley's principle ;
the Diving Beil and Diver in Dean's Dress; Chemical and
Philosophical Lectures. A considerable. increase in Scientific
Inventions. Annual Subscribers, IL Is. to 3/. 3s. A mo-
dified scale for Schools. Subscribers to the Reading Associa-
tion in Cavendish-square, 2/. to 3/. 3s. per annum, and
3,. 33. entrance.
The Theatre, or Lecture-room, will be let on evening; only,
for Concerts or Scientific purposes, at 5/. ss. per night, with
lights and attendants, to which may be added the use of the
Microscope or other instruments for experiments.
The Directors beg to announce that Mr. Mangliam, the
Professor of Chemistry to the Institution, has now opened the
extensive Laboratory, and is ready to receive applications from
Noblemen and Gentlemen as pupils, either.in classes or for
private study- Analyses and advice given in mining and manu-
facturing piocesses. Persons desirous of obtaining tests will
have their wishes attended to.
POLYTECHNIC INSTITUTION, 309, REGENT-.
STREET.

Open from Half-past Ten A.m. to Seven r,at.—Admission to
the whole, Is.

SANATORIUNI, for the LODGING,
A_ NURSING, and CURE of SICK PERSONS, of
both sexes, of the middle classes.

A PUBLIC MEETING, e4anatory of the objeets, ad-
vantages, and progress of this Institution, will be held at
Willis's Rooms, King-street, St. James's, on SATURDAY, the
16 h inst., at Eleven for Twelve o'Clock.
Lord GROSVENOR, M.P., in the Chair.

Seats will be reserved for ladies. The friends and sub-
scribers of the Institution are earnestly requested to attend.
G. STACEY, Hon. Sce:etary.

CAUTION TO PERSONS NEGLECT-
ING THEIR TEETH AND GUMS.
TO THE EDITOR OF THE SUN.
St a,—Among the various disorders of the mouth, there is
none more destructive than Scurvy, which on first entering the
gums causes them to bleed on the most trifling occasions, and
produces the most offensive and frequently putrid breath. A
soft substance invariably accumulates ;Found the necks of the
Teeth, penetrates into the Gums_which gradually waste away,
and the Teeth then become loose, and drop out whole from
their sockets, and it is well known that the loss of Teeth
arises snore from this cause than any other ; in short Scurvy in
the Gums affects individuals of all ages and constitutions, .and
if not speedily removed, will be the primary cause of Tooth-
Ache and decay.
On this subject a disting3ished Lecturer makes the following
observations :—" When the diSgusting effects of this accumu-
lation are considered, it would appear impossible that any per-
suasion could be necessary to induce persons to obviate so great
a nuisance even on their own account; or if they are too de-
based to procure their own comfort and cleanliness by employ-
ing a skilful Dentist, they surely have no right to shock the
senses of others, who possess more delicacy and propriety of
feeiing than themselves. Yet, so it is; and the sight and the
smell are alike constantly outraged by the filthiness of some
people, who seem to obtrude their faces the closeri., proportion
to the disgust which they occasion."—Bell's Lectures, p. 199.
Could such persons only see the horrid state of their teeth
and gums, or for a moment catch the odour of their own
breath, they would not hesitate to seek immediate relief. To
professional men, shopkeepers, and tradesmen generally, who
have much intercourse with the refined and fashionable world,
a good state of the mouth must be of the greatest importance !
Besides, is not an offensive breath, which in nineteen cases out
of twenty proceeds from the bad state of the teeth and gums,
very much calculated to prevent the blessing of matrimony ?
And how often, from inadvertence or neglect, is the happiness
of the marriage state most grievously interrupted by the same
cause. _ .

The inconveniences attending the Loss of Teeth are too well
known to require comment ; but to those who have not expe-
rienced the comfort of artificial teeth, Monsieur Le Dray is de-
sirous of showing some of the difficulties more or less endured
by every individu it without them. When the Teeth are lost, it
is impossible to make use of solid feed; and if the stomach is then
loaded with pieces without being masticated, the patient is ex-
posed to the most distressing indigestions, the stomach loses its
power of contraction, and becomes weak in proportion as it no
longer digests ; besides, when the Teeth are gone, a great va-
cuum is left in the mouth, which occasions every muscle in the
face to be distorted, and the whole features are completely
drawn from their original position.
To insist on the importance of the teeth, whether in. regard
to the functions of digestion and articulation, to which they are
so essential, or to personal appearance, in which they are so
much concerned, must appear a waste of words, were it net
obvious that there are many persons who never give themselves
the trouble to think upon the subject—who seem scarcely
aware that they possess teeth at all, while their gross and culpa
ble negligence renders that fact too apparent to their frienth
and associates.
Mastication is the first process of digestion, and unless it be
duly performed, the subsequent ,processes can never go on
properly. It is a mistaken notion, that the mere chopping, of
the food is all that is required, and that " patent masticators,"
or any other contrivance, can supply the place of teeth.
By the motion of the maxillary bonss in the communication
of food, the salivary glands are compressed, and the saliva, be-
ing poured forth from the ducts, mingles with the food, which
is turned about by the tongue until every portion of it is duly
incorporated with the saliva. Then,•and not till then, is it
properly prepared for deglutition.
So essential is this preparatory process, that the neglect of it
is sufficient to occasion indigestion, a disordered stomach,
nervous debility, depressi,:n of spirits, the skin becomes
rough and tinged of a lead colour, the eyes lose their
brilliancy, the lips their vermillion hue, and in a word,
it is no uncommon thing for the whole body to receive
such a shock as to cause relaxation of the whole system ;
which produces.an irritable temper, quite foreign to the natural
disposition, whereby we become an annoyance to our friends
and a burthen to ourselves. But I need not dwell upon the
numberless concomitant evils which may thus owe their origin
to imperfect mastication. It is sufficient to know, that Mon-
sieur Le Dray's improvements will be found to be maey years
in adsance of any system now in Europe, and that artificial
teeth are brought to such perfection, as to perform this function
in a manner equal its every respect to the natural teeth, and
may be used with every comfort. They are so arranged as to
restore the face to its former youthful cast, correcting all
deformities of the mouth, and entirely doing away with the
old system of springs, clasps, and wires. And in all cases a
single application is quite sufficient to enable him to supply
the loss of teeth (on his new system), without any further
trouble to the Patient, or the inconvenience of a second visit.
And he is also happy to state, that after many years of inde-
fatigable assiduity and close application to the mechanical
branch of the profession, he has succeeded in discovering a
method of supplying Teeth to persons residing at any distance
by means of his newly invented preparation, which enables
the Patients to take an impression of their cwn mouth with
the greatest ease, and without causing the slightest pain or
inconvenience; so that after the model of the mouth has been
received by Mons. Le Dray, lie can manufacture from one to a
complete set of Teeth, and return them to the parties so con-
structed, that they may be placed in the mouth by the wearer
without the knowledge of a second person, being arranged
on a principle yet unrivalled, rendering it impossible to dise
tinguish the Artificial Teeth from the Natural ones ; answering
most satisfactorily all the purposes of the original Teeth in mas-
tication and articulation, imparting to the countenance a
younger and improved appearance, protecting the adjoining
Teeth, and remaining perfectly secure in their places ; they
may also be taken out and replaced with the greatest facility.
It is respectfully intimated to Country Patients, hewever dis-
tarit, they must please to state the number of Teeth required,
whether back or front, and at the same time enclose a remit-
tance of a Sovereign, when the preparation for taking the model
or measure of the mouth will be immediately forwarded to
their addresses, together with a List of Prices. Letters must
be post-paid—addressed as follows—(Money Letter) Mous.
Le Dray, Surgeon Dentist, 60, Newman-street, Oxford street;
London.
The neat point of view in which we are to consider the im-
portance of the Teeth, is that of their connexion faith the grand
prerogative of man—the gift of speech. The teeth are abso-
lutely essential to a perfect articulation, and are mainly ccn-
cereed in the modulation of tne voice. Their preservation is,
therefore, essential to all persons who do not seclude themselves
from society ; for what can be more disagreeable than the
mumbling ‘.:Lich renders convcrsation a task, and robs it of
half its charms; unless, indeed, it be the sputtering in one's
face, which sometimes aceompanics the exclusive fervour of a
sotto voce communication.
To all public speakers, whether in the senate, in the pulpit,
at the bar, or on the stage, teeth, real or artificial; are a sine
qua non. Without them the graces of eloquence arc lost,
awl the powers of oratory very much diminished.
No person to whom a correct articulation, and a clear im-
pressive delivery, are of consequence, can be ignorant Of the
effect which the loss of teeth has upon the powers of voice,
and none I conceive will delay to call in the aid of art; but
it would be well if all such persons were impressed with this
foot beforehand, as one of the strongest indooemea to bestow
upon their teeth the necessary care.
As an essential point of beauty, the teeth must ever stand
pre-eminent. No regularity of features, no brilliancy of cons-
. plexion, no sparkling eyes, or silken braids of jetty hair, can
render that lady beautiful, who, when she opens her lips
(though they be of coral), discloses a set of teeth irregular
or discoloured. On the contrary, even homely features and
a sallow complexion are embellished and rendered agreeable
by a good set of teeth. A mouth large and formed will
pass unnoticed, when it contains teeth beautifully white and
even. On the .other hand, the effects of decay, the accumu-
lation of tartar, the blackened and denuded fangs, and the
taint of the breath, which is a common concomitant of bad
teeth, will invariably prove disgusting and loathsome.
Regular teeth, white, and free from all extraneous matter,
are an ornament, equally attractive in either sex. Those per-
sons who do not possess this natural advantage, sh eild endea-
vour, by extreme care and cleanliness, and a timely resort to
artificial aid, to remedy the imperfections, and supply the defi.
ciencies of nature, in order that their teeth, if net an agree-
able object, may be prevented, as far as possible, from becom-
ing a repulsive one.
Aloes. Le Dray respectfully acquaints the'uobility, gentry,
clergy, and inhabitants of London and its vicinity, that he con-
tinues to restore Decayed Teeth with his celebrated Mineral
Marmoratum, so universally recommended by the Faculty of
England, France, and throughout the Continent, which sub-
stance he is the sole inventor and possessor of.
This operation is performed without the least pain, heat, or
pressure ; it is placed into the cavity in an almost liquid state,
and in a few seconds hardens into enamel, pieventing and cur-
ing the Tooth Ache, forming a whole Tooth out of a stump,
arresting all further progress of decay, allaying in one minute
the most excruciating pain, and rendering the operation of ex-
traction unnecessary. Ile also fastens Loose Teeth, particularly
of aged persens, whether arisingrany
ofrtoier cause.
from neglect, the use of calo-
mel, nisease of the gums, or
ARTIFICIAL or NATURAL TEETH of surpassing
beauty, to match equal in colour and shape those
o left
witnessitlie
mouth, fixed from one to a complete set, without extracting the
roots or giving any pain, at charges reduced to less than one-
half the price of any other Dentist. in England.
Mona. Le Draw particularly invites the Faculty
the operation of. Filling Decayed Teeth with Mineral Mar-
moraturn.
C. J. LE DRAY, Surgeon Dentist,
60, Newman-street, Oxforcbstreet.
gar At Home every day from Ten till Six,