Instruction in the Processes. BLAND & LONG, Opticians and Photographical Instrument Makers, and Operative Chemists, 153. Fleet Street, London. *** Catalogues sent on application. * * * * * THE SIGHT preserved by the Use of SPECTACLES adapted to suit every variety of Vision by means of SMEE'S OPTOMETER, which effectually prevents Injury to the Eyes from the Selection of Improper Glasses, and is extensively employed by BLAND & LONG, Opticians, 153. Fleet Street, London. * * * * * PHOTOGRAPHIC CAMERAS. OTTEWILL AND 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. * * * * * SMEE'S BINOCULAR PERSPECTIVE PHOTOGRAPHS.--A full account of the mode of taking these extraordinary Likenesses in "Smee on the Eye," just published, price 5s. HORNE, THORNTHWAITE & WOOD, 123. Newgate Street, London. * * * * * 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. * * * * * 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. * * * * * {388} WESTERN LIFE ASSURANCE AND ANNUITY SOCIETY. 3. PARLIAMENT STREET, LONDON. Founded A.D. 1842. _Directors._ H. E. Bicknell, Esq. | T. Grissell, Esq. T. S. Cocks, Jun. Esq., M.P. | J. Hunt, Esq. G. H. Drew, Esq. | J. A. Lethbridge, Esq. W. Evans, Esq. | E. Lucas, Esq. W. Freeman, Esq. | J. Lys Seager, Esq. F. Fuller, Esq. | J. B. White, Esq. J. H. Goodhart, Esq. | J. Carter Wood, Esq.