* * * * *
ROSS'S PHOTOGRAPHIC PORTRAIT AND LANDSCAPE LENSES.--These lenses give
correct definition at the centre and margin of the picture, and have their
visual and chemical acting foci coincident.
_Great Exhibition Jurors' Reports_, p. 274.
"Mr. Ross prepares lenses for Portraiture having the greatest intensity
yet produced, by procuring the coincidence of the chemical actinic and
visual rays. The spherical aberration is also very carefully corrected,
both in the central and oblique pencils."
"Mr. Ross has exhibited the best Camera in the Exhibition. It is
furnished with a double achromatic object-lens, about three inches
aperture. There is no stop, the field is flat, and the image very
perfect up to the edge."
Catalogue sent upon Application.
A. ROSS, 2. Featherstone Buildings, High Holborn.
* * * * *
PHOTOGRAPHY.--Collodion (Iodized with the Ammonio-Iodide of Silver).--J. B.
HOCKIN & CO., Chemists, 289. Strand, were the first in England who
published the application of this agent (see _Athenæum_, Aug. 14th). Their
Collodion (price 9d. per oz.) retains its extraordinary sensitiveness,
tenacity, and colour unimpaired for months; it may be exported to any
climate, and the Iodizing Compound mixed as required. J. B. HOCKIN & CO.
manufacture PURE CHEMICALS and all APPARATUS with the latest Improvements
adapted for all the Photographic and Daguerreotype processes. Cameras for
Developing in the open Country. GLASS BATHS adapted to any Camera. Lenses
from the best Makers. Waxed and Iodized Papers, &c.
* * * * *
PHOTOGRAPHIC PICTURES.--A Selection of the above beautiful Productions may
be seen at BLAND & LONG'S, 153. Fleet Street, where may also be procured
Apparatus of every Description, and pure Chemicals for the practice of
Photography in all its Branches.
Calotype, Daguerreotype, and Glass Pictures for the Stereoscope.
BLAND & LONG, Opticians, Philosophical and Photographical Instrument
Makers, and Operative Chemists, 153. Fleet Street.
* * * * *
PHOTOGRAPHIC PAPER.--Negative and Positive Papers of Whatman's, Turner's,
Sanford's, and Canson Frères' make. Waxed-Paper for Le Gray's Process.
Iodized and Sensitive Paper for every kind of Photography.
Sold by JOHN SANFORD, Photographic Stationer, Aldine Chambers, 13.
Paternoster Row, London.
* * * * *
PHOTOGRAPHIC PORTRAITS and VIEWS by the Collodion and Waxed-Paper Process.
Apparatus, Materials, and Pure Chemical Preparations for the above
processes, Superior Iodized Collodion, known by the name of Collodio-iodide
or Xylo-iodide of Silver, 9d. per oz. Pyro-gallic Acid, 4s. per drachm.
Acetic Acid, suited for Collodion Pictures, 8d. per oz. Crystallizable and
perfectly pure, on which the success of the Calotypist so much depends. 1s.
per oz. Canson Frères' Negative Paper, 3s.; Positive do., 4s. 6d.; La
Croix, 3s.; Turner, 3s. Whatman's Negative and Positive, 3s. per quire.
Iodized Waxed Paper, 10s. 6d. per quire. Sensitive Paper ready for the
Camera, and warranted to keep from fourteen to twenty days, with directions
for use, 11×9, 9s. per doz.; Iodized, only 6s. per doz.
GEORGE KNIGHT & SONS (sole Agents for Voightlander & Sons' celebrated
Lenses), Foster Lane, London.
* * * * *
PHOTOGRAPHY.--XYLO-IODIDE OF SILVER, prepared solely by R. W. THOMAS, has
now obtained an European fame; it supersedes the use of all other
preparations of Collodion. Witness the subjoined Testimonial.
"122. Regent Street
"Dear Sir,--In answer to your inquiry of this morning, I have no
hesitation in saying that your preparation of Collodion is incomparably
better and more sensitive than all the advertised Collodio-Iodides,
which, for my professional purposes, are quite useless when compared to
yours.
"I remain, dear Sir,
"Yours faithfully,
"N. HENNEMAN.
Aug. 30. 1852.
to Mr. R.W. Thomas."
MR. R. W. THOMAS begs most earnestly to caution photographers against
purchasing impure chemicals, which are now too frequently sold at very low
prices. It is to this cause nearly always that their labours are unattended
with success.
Chemicals of absolute purity, especially prepared for this art, may be
obtained from R. W. THOMAS, Chemist and Professor of Photography, 10. Pall
Mall.
N.B.--The name of Mr. T.'s preparation, Xylo-Iodide of Silver, is made use
of by unprincipled persons. To prevent imposition each bottle is stamped
with a red label bearing the maker's signature.
* * * * *
PHOTOGRAPHY.--HORNE & CO.'S Iodized Collodion, for obtaining Instantaneous
Views, and Portraits in from three to thirty seconds, according to light.
Portraits obtained by the above, for delicacy of detail rival the choicest
Daguerreotypes, specimens of which may be seen at their Establishment.
Also every description of Apparatus, Chemicals, &c. &c. used in this
beautiful Art.--123. and 121. Newgate Street.
* * * * *
BENNETT'S MODEL WATCH, as shown at the GREAT EXHIBITION, No. 1. Class X.,
in Gold and Silver Cases, in five qualities, and adapted to all Climates,
may now be had at the MANUFACTORY, 65. CHEAPSIDE. Superior Gold London-made
Patent Levers, 17, 15, and 12 guineas. Ditto, in Silver Cases, 8, 6, and 4
guineas. First-rate Geneva Levers, in Gold Cases, 12, 10, and 8 guineas.
Ditto, in Silver Cases, 8, 6, and 5 guineas. Superior Lever, with
Chronometer Balance, Gold 27, 23, and 19 guineas. Bennett's Pocket
Chronometer, Gold, 50 guineas; Silver, 40 guineas. Every Watch skilfully
examined, timed and its performance guaranteed. Barometers, 2l., 3l., and
4l. Thermometers from 1s. each.
BENNETT, Watch, Clock, and Instrument Maker to the Royal Observatory, the
Board of Ordnance, the Admiralty, and the Queen,