d; 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.

* * * * *

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.

* * * * *

ALLEN'S ILLUSTRATED CATALOGUE, containing Size, Price, and Description of
upwards of 100 articles, consisting of PORTMANTEAUS, TRAVELLING-BAGS,
Ladies' Portmanteaus, DESPATCH-BOXES, WRITING-DESKS, DRESSING-CASES, and
other travelling requisites. Gratis on application, or sent free by Post on
receipt of Two Stamps.

MESSRS. ALLEN'S registered Despatch-box and Writing-desk, their
Travelling-bag with the opening as large as the bag, and the new
Portmanteau containing four compartments, are undoubtedly the best articles
of the kind ever produced.

J. W. & T. ALLEN, 18. & 22. West Strand.

* * * * *

W. H. HART, RECORD AGENT and LEGAL ANTIQUARIAN (who is in the possession of
Indices to many of the early Public Records whereby his Inquiries are
greatly facilitated) begs to inform Authors and Gentlemen engaged in
Antiquarian or Literary Pursuits, that he is prepared to