branch of the Art.

An extensive Collection of Stereoscopic and other Photographic Specimens.

GEORGE KNIGHT & SONS, Foster Lane, London.

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PHOTOGRAPHIC CAMERAS.--OTTEWILL & MORGAN'S Manufactory, 24. & 25. Charlotte
Terrace, Caledonian Road, Islington. OTTEWILL'S Registered Double Body
Folding Camera, adapted for Landscapes or Portraits, may be had of A. ROSS,
Featherstone Buildings, Holborn; the Photographic Institution, Bond Street;
and at the Manufactory as above, where every description of Cameras,
Slides, and Tripods may be had. The Trade supplied.

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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
Daguerrotypes, 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.

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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.

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PIANOFORTES, 25 Guineas each.--D'ALMAINE & CO., 20. Soho Square
(established A.D. 1785), sole manufacturers of the ROYAL PIANOFORTES, at 25
Guineas each. Every instrument warranted. The peculiar advantages of these
pianofortes are best described in the following professional testimonial,
signed by the majority of the leading musicians of the age:--"We, the
undersigned members of the musical profession, having carefully examined
the Royal Pianofortes manufactured by MESSRS. D'ALMAINE & CO., have great
pleasure in bearing testimony to their merits and capabilities. It appears
to us impossible to produce instruments of the same size possessing a
richer and finer tone, more elastic touch, or more equal temperament, while
the