General Depôt for Turner's, Whatman's, Canson Frères', La Croix, and other Talbotype Papers. Pure Photographic Chemicals. Instructions and Specimens in every Branch of the Art. GEORGE KNIGHT & SONS, Foster Lane, 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. * * * * * 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. * * * * * 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. * * * * * CLERICAL, MEDICAL, AND GENERAL LIFE ASSURANCE SOCIETY. * * * * * Established 1824. * * * * * FIVE BONUSES have been declared; at the last in January, 1852, the sum of 131,125l. was added to the Policies, producing a Bonus varying with the different ages from 24½ to 55 per cent. on the Premiums paid during the five years, or from 5l. to 12l. 10s. per cent. on the Sum Assured. The small share of Profit divisible in future among the Shareholders being now provided for, the ASSURED will hereafter derive all the benefits obtainable from a Mutual Office, WITHOUT ANY LIABILITY OR RISK OF PARTNERSHIP. POLICIES effected before the 30th June next, will be entitled, at the next Division, to one year's additional share of Profits over later Assurers. On Assurances for the whole of Life only one half of the Premiums need to be paid for the first five years. INVALID LIVES may be Assured at rates proportioned to the risk. Claims paid _thirty_ days after proof of death, and all Policies are _Indisputable_ except in cases of fraud.