ch, Clock and Instrument Maker to the Royal Observatory, the
Board of Ordnance, the Admiralty, and the Queen,

65. CHEAPSIDE.

* * * * *

VIEWS IN LONDON.

STEREOSCOPES AND STEREOSCOPIC PICTURES.

BLAND & LONG, 153. FLEET STREET, OPTICIANS and PHILOSOPHICAL INSTRUMENT
MAKERS, invite attention to their Stock of STEREOSCOPES of all Kinds,
and in various Materials; also, to their New and Extensive Assortment of
STEREOSCOPIC PICTURES for the same, in DAGUERREOTYPE, on PAPER, and
TRANSPARENT ALBUMEN PICTURES on GLASS, including Views of London, Paris,
the Rhine, Windsor, &c. These Pictures, for minuteness of Detail and
Truth in the Representation of Natural Objects, are unrivalled.

BLAND & LONG, Opticians, 153. Fleet Street, London.

*** "Familiar Explanation of the Phenomena" sent on Application.

* * * * *

IMPROVEMENT IN COLLODION.--J. B. HOCKIN & CO., Chemists, 289. Strand,
have, by an improved mode of Iodizing, succeeded in producing a
Collodion equal, they may say superior, in sensitiveness and density of
Negative, to any other hitherto published; without diminishing the
keeping properties and appreciation of half tint for which their
manufacture has been esteemed.

Apparatus, pure Chemicals, and all the requirements for the practice of
Photography. Instruction in the Art.

THE COLLODION AND POSITIVE PAPER PROCESS. By J. B. HOCKIN. Price 1s.,
per Post, 1s. 2d.

* * * * *

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.

* * * * *

PHOTOGRAPHIC CAMERAS.--OTTEWILL'S REGISTERED DOUBLE-BODIED FOLDING
CAMERA, is superior to every other form of Camera, for the Photographic
Tourist, from its capability of Elongation or Contraction to any Focal
Adjustment, its Portability, and its adaptation for taking either Views
or Portraits.--The Trade supplied.

Every Description of Camera, or Slides, Tripod Stands, Printing Frames,
&c., may be obtained at his MANUFACTORY, Charlotte Terrace, Barnsbury
Road, Islington.

New Inventions