The Sun.
London, England, 1863-06-03 00:00:00

PHOTOGENIC GAS COMPANY (Limited.)
Incorporated under the Companies' Act, 1'62, whereby
each Shareholder's liability is sp 2cially limited to the amount
01 his subscription.
Capital, £200,000, in 10,000 Shares of £2O each.
First Issue, 5,000 Shares.

Payable—£l on application, £2 on allotment, £2 in three
months from the date of allotment, and the remainder in
sums not exceeding £2los. each, at intervals of not less than
three mouths, as the extension of the Company's businers
may require. It is estimated that £lO per Share is the largest
amount that will be required during the first 12 or 18 months,
and it is not Ltended that more than £l5 per Share should
at any time be called for.
DIRECTORS.

Samuel Appleby' Esq., 6. Harpur-street. Bloomsbury.
William Clarke, Esq , 103, Adelaide-road, Hampstead.
George Fagg,Esq.,Director of the London and South- Western
Bank.
John Geary, Esq., Director of the Metropolitan and Provin-
cial Bank.
Reginald Read, FN., Director of the Crystal Palace Company.
Charles Strudwick, Ebq , 76. Cannon-street West, ana 25, St.
James's-square.
(With rower to add to their number.)
SOLICITOR.
James Crosby, Esq., 3, Church-court, Old Jewry.
BANKERS.
Metropolitan and Provincial Bank, 75, Corohill.
itnoKEn.

Henry Frisby, Esq. (late Foster Brothers, and Fi izby), 27,
Tokenhouse-yard.
MANAGER—Mr. Joseph Thomas.
OFFICES.

No. 95, Blehopsgate. street Within (adjoining Gresham House).
This Company is formed for the purpose of introducing to
the United _Kingdom of Ore Britain and Ireland the Pho-
togenic Light, equally obtainable from ordinary gas or at-
mospheric air, by Moneruel's Patent Cold Generator.
A light which is at the same time powerful, cheap, and
healthy needs only that its possession of those qualities
should be established in order to secure its immediate adop-
tion by the public.
The Photogenic Light has been publicly exhibited in Lon-
don for some months past to thousands of persons, including
chemists, engineers, gasfitters, and large consumers. During.
the period referred to practical experience has demonstrated.
Its economy, the grest increase of brilliancy it gives to ordi-
nary gas. and the important tact of the constancy and dura-
bility of that increase. It has been and is about being erected
on a large scale in some Important esta -dishments in London,
and may new be seen, from twelve to three o'clock daily, at
the Company's Offices, 95, Bishopsga e-street Within, where
a few minutes' inspection will convince capitalists and con-
sumers that it possesses the following advantages which are
confidently claimed for it.
1. That, when atmospheric air is used, it can he made in
any house or establishment, costs less than ordinary gas,
gives a whiter and more
,intense light, without smell or
smoke, and is more healthy.
2. That it is not necessary to make any alterations in exist-
ing gas fittings, except in some cases with the burners.; and
that where no service at present exists it will cost less to Jay
down the pipes, &c. &c.
3. That in consequence of the absence of ammcniacal_ane,d
sulphurous acid vapours, it does not injure the mslnt,guatn
Or furniture of apartments. and that it is inexplosive.
4. That when used to enrich and purify ordinary gag it is
only necessary that the
Sit leaves the meter, should
pass through M. Mongrgarl'e a
Generator to the burners, in
order to acquire an increased illuminating power of from 150
to 400 per cent., while the consumption of the gas itself is
diminished by at least one-fourth.
5. That when used as last stated, in order to obtain a light
equal to that of ordinary gas, the consumption of such gas is
diminishedinished by upwards of V per cent., while the heat and
other injurious effects arising from the use of gas are dimi-
nished in proportion.
It is unnecessary to dwell on the importance of these ad-
vantages. some or all of them have been sought ever since
the days of Windsor and Murdock; and ingenious inventors
are still occupying themselves with the carburation of gas,
since it has long been known that by dissolving carburetted
hydrogen vapours in. hydrogen gas, the latter acquires a
triple or quadruple illuminating power. What, however, was
wanted, and M. Mongruel has invented, is an appara us
which will produce a constant vapour, always equally rich in
carbon, so that the light is at all times the same. With a'l
other apparatus used for the purpose, the generation of the
-vapours being effected on the mass of the liquid contained
therein, the most volatile parts of the liquid naturally first
escape, thus impoverishing the remainder, which daily gives
less and less light, until the light disarpears altogether,
while a considerable quantity of the liquid is still left in the
apparatus. In M. Mongruei's Generator, on the contrary,
the mass of the liquid is enclosed hermetically in an upper
chamber, A hence it descends by a small tube, to form a thin
sheet on the bottom of the lower chamber, wherein its va-
porisation is effected, and is supplied, drop by drop, only as
what has preceded it is consumed. Without springs or me-
chanism, which may break or get out of order, it maintains
a level physically and mathematically constant, and produces
the vapours regularly, according to requirement. Further,
the mass of the liquid held in reserve to feed the sheet which
is vaporising cannot become impoverished, as it is sheltered
from all contact with the gaseous currents.

It may be as well to repeat that the generator thus de-
sCribed is equally applicable to the carburation of ordinary
gas or atmospheric air ; and that the liquid employed by M.
Mongruel, although greatly superior to, is very little if at an
more expensive than any previously use t for similar pur-
poses, and is not l.kely to vary much in its cost.
Ot this valuable invention, M. Mongruel has agreed to
assign to this Company his patent and p tent rights, for the
United Kingdom and the Channel Islands, for a sum equal to
one-fourth of the capital of the Company; of which sum he
is to receive £5,000 only in cash and the remainder in fully
paid-up shares of the Company, thus showing his confidence
In its commercial success.
It is impossible in a prospectus to point out all the sources
from which profit may be expected to be derived by this
Company. In addition to those to arise from the sale of the
Generators and of the liquid employed therein, others have
daily presented themselves in the course of the demonstra-
tions made diving the short time the Photogenic Light has
been exhibited in London.
Numerous applications have already been made for licences
to be worked by sub-companies or otherwise, in such towns
as Liverpool, Manchester, Glasgow, Dublin, Edinburgh, &c.,
Arc. ; not to speak of the host of small towns, where gas,
being mueh dearer than in those just named, the economical
advantages of this light will be proportionately greater.
Similar applications have also been made, and may be ex-
pected, for the application of atmospheric air to the lighting
of small towns and large villages, in which gas does not
exist, as also of railway "stations and trains, gentlemen's
seats, paper and other mills, factories, churches, chapels,
schools, unions, prisons, and other establishments, in iso-
lated places, where so healthy a light would be invaluable,
and in which ordinary gas could at present be only obtained
at an amount of expense and trouble for which it would not
compensate. _

here is, further, every probability that this light will be
adopted in many of our Government establishments, par-
ticularly in lighthouses and in her Majesty's vessels of war,
to which of course it will not be confined, as it is equally ap-
plicable to the large ships of our commercial marine.
Lastly, there is London, in which the application of Pho-
togenic Light to the enrichment of a small portion only of
the enormous quantity of gas consumed (estimated to exceed
5.000 millions of cubic feet per annum) must effect an eco-
nomy of that article, and an increase of light, the benefits
of which, if only moderately shared in by this company, must
alone suffice to yield large dividends on any amount of capi-
tal it may be found desirable to employ.
But, in addition to the sources of profit named above, other
and large ones may be reckoned on ; as. for example, those
arising from the sale of the Phctog;enic Generators and Pho-
togen, f,r export to all those parts of the world in which M.
Mongruel his not obtained letters patent for his invention.
As this Company will alone be in a situation to make and
sell these articles in this country, and as they will neces-
sarily be made in very large quantities, by contract, or at the
Company a own works, they must yield, even if sold at mo-
derate prices, very considerable profits to the Company.
Beyond the amount to be paid to M. Mongruel for his pa-
tent and patent rights, no charge will be made for the forma-
tion of the Company beyond the actual preliminary expenses
Incurred therein.
Applications for shares must be made in the accompanyinc,
form only, and the required deposit of £1 per share paid to
the bankers of the Company, or at the Company's offices. If
no allotment be made, the deposit will be returned in full.
Prospectuses and forms of application may be obtained of
the bankers, broker, and solicitor of the Company, and at the
Company's Offices, where any further desired information
will be given.

FORM OF APPLICATION FOR SHARES.
To the Directors of the Photogenic Gas Company, _
(Limited).
Gentlemen,—Having paid the sum of as a , deposit
of i per Share on Shares in the Photogenic uas Com-
pany, Limited, I request you will allot me that number of
Shares, and I hereby agree to accept the same, or any less
number which may be allotted to me ; and I agr,2e to become
a member of the Company. subject to the memorandum and
Articles of Association and I request you to place my name
on the register of Shareholders.
Name in lull
Profession or business
Address ..............
Dated the day of 1863. ....
"
*** If more convenient to the applicant, the denosit may
be sent, with the above form, by country dratt or Post-office
order, direct to the Company's Office, cross " Metropolitan
and Provincial Bank."