The Sun.
London, England, 1848-07-10 00:00:00

THE ROYAL POLYTECHNIC
INSTITUTION, REGENT-STREET,

First Exhibition of Important and Novel Experiments in Elec-
ricity, by [sham liaggs, Esq., illustrating the Phenomena of Thunder-
ltorms and the Cause of Lightning, in a series of Lectures, on Mon-
day, Wednesday, and Friday, at Two o'clock, and in the Evenings
of Tuesday, Thursday, and Saturday, at Nine o'clock.—Popular Lec-
tures by Dr. Ryan and Dr. Itachhoffner.—Dioramic effects are ex-
hibite.i in the new Dissolving Views, which, with the Chromatrope
and Nficro-cope, are shown on the large disc.—Experiments with
the Diver and Diving-bell.—New Machinery and Models described.
Open daily front Eleven to Five ; and in the Evenings (including
Saturday) from. SeVen 1111'1-NW-past Ten.
Admission, Is.--Schools, lialf-price.—Tite New Catalogue, Is.

SOCIETY for the PROMOTION of
COLONIZATION.
A PUBLIC MEETING of the Members and Friends of this So-
ciety will he held at the Hanover-square Rooms, on TUESDAY, the
11th of July, at Two o'clock,
The Earl of HARROWBY in the Chair.
The objects of this Society are to aid, by way of Loans or other-
wise, in the Emigration or ,zettlement of persons fitted to become
Colon' sts ; to collect amt diffuse information ; and in furtherance of
these objects, to form corresponding Associations at home and in th
Colonies.
Temporary Offices of the Society,
4, St. Nlartin's-place, Trafalgar square.

PURE PORT.—A combination of interested
competitors in the Wine-trade having existed at Oporto since
the year 1844 (with all its ramifications in this country) for the ma-
nifest object of preventing Pure Port Wine from being (trunk in Eng-
land, as it used forraerly to be, OFFLEYS, WEBBER, FORRES-
TER, and CRAMP, Alto Douro, Farmers, have determined, as
growers, in self-defence. to sapply the consumers direct, and there-
fore make this public announcement for the information of those
gentlemen who are disposed to replenish their cellars with pure fully
fermented and high-flavoured Port.

London, 36, New Broad-street, July I, 1843.
A WORD or TWO on PORT WINE, addressed to the British
Public generally, but particularly private gentlemen, by JOSEPH
JAMES FORRESTER (of the House of Ofilleys, Webber, Forrester,
and Cramp, of Oporto), author of " Surveys of the Wine Districts of
the Alto-Douro," " Surveys of the Rive,* Douro," &c., &c.
Published by Royston and Brown, 40 and 41. Old Broad-street.

THIS is the WEATHER for that very refresh.
ing effervescent beverage, MAUGIIA N'S PATENT CAR-
RARA-WATER; Which Chemists, Confectioners, and others are
enabled to Tend in high perfection, at the price of common soda Wa-
ter. The CARRARA-WATER is manufactured only at 78, Upper
Thames-street, and may be obtained wholeAale (or in any quantity)
on manufactory terms, from the principal London Agents, Messrs.
HENRY BRETT and CO., Brandy Merchants, Old Furnival's Inn,
Holborn.

ICE RAPIDLY AND ECONOMICALLY
PRODUCED, by MASTERS'S PATENT REFRIGERATORS,
which are so simple that a child may use them. Rock Ice is made
in ten minutes, Dessert Ices in five minutes, and Wine or Water is
made as cold as ice in three minutes. In his Patent Fountain all
kinds of Aerated Waters, Lemonade, &c., of first-rate quality, and
delightfully cool, are producel in ten minutes. An elegant assort-
ment of Decanters, Claret and Water Jugs, Butter Coolers, Filters,
&c. &c., are on sale at 254, Regent-street, and at No. 7, Mansion-
house-street, opposite the Vansion-house ; where Mr. Masters will be
happy to show how easy it is to produce eighty degrees of cold in the
hotest room, at a trifling expense.
That the Refrigerators are " simple, economical, and elegant," is
certified by numerous Establishments, amongst which are the fol-
lowing : The Euston Hotel, Junior United Service Club, Cremona
Gardens, Confectionary Room of Her Majesty's Theatre, &c., &c.

IMPROVED PATENT ROTARY BUFF
KNIFE-CLEANER. —MASTERS'S PATENT KNIFE-
CLEANER is, beyond contradiction, the most useful Machine ever
made for this purpose. The proprietors of numerous first-rate Esta-
blishments certify to its excellence in the following terms :
" It is economical, easily worked, is not liable to get out of order,
is exceedingly expeditious, and gives to cutlery the fine and bril-
liant polish of a new article." Certified by the Proprietor of Cre-
morns Gardens, Parthenon Club, Thatched Ilouse Tavern, European
hotel, &c. &c.

These beautiful Machines clean from 6 to 12 Knives per minute,
and vary in price from 21. 10s. to 101. according to size. They may
be seen in operation at Mr. Masters's Establishments, No, 294,
Regent-street, and at No. 7, Manion-House-street, opposite the
Mansion-House, City.

ORNAMENTAL CLOCKS.—Recently received
from Paris an unusual large variety of Fourteen-dny
CLOCKS, to strike the hours and half-hours, in ormolu, marble, and
china. The desins are pastoral and historical, and include a few of
erect merit, In the style of Louis XIV. The price is four, five, and
seven guineas each, and upwards.
A. B. SAVORY and SONS, 9, Conthill, London, opposite the
statuo of the Duke of Wellington.

STRICTURES OF THE URETHRA: Prevalent and Dangerous

Errors in their Treatment.
Just published, price 55., (by post flee, 65.,) Bvo., in cloth,
THE PATHOLOGY AND RATIONAL
TREATMENT of STRICTURES of the URETHRA, in all
their Varieties and Complications. With Practical Observations no
the Use and Abuse of Instruments in the Treatment of Urethral Dis-
eases, showing that the unnecessary employment of instruments is
a frequent exciting cause of stricture, and that a want of practical
knowledge and manual dexterity in their use, when necessary, Is the
s'airce of most of the severe, long-protracted, and complicated cases
of that disorder so fatally pi evalent. The whole illustrated by nu
melons cases.