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January 16, 1880^ THE PHOTOGRAPHIC NEWS. viii REVOLUTION IN PHOTOGRAPHY PRICES OF SWAN’S PLATES. Size of Plate in inches. 7, X5 85x6} JJear-8ooh of Ahotograply AND PHOTOGRAPHIC NEWS ALMANAC EDITED BY PIPER & CARTER, 5, CASTLE STREET, HOLBORN, E.C. Size of Plate in inches. 9x7 10x8 12x10 Per Dozen. ... 3/- ... 4/3 ... 5/9 ... 6/6 Size ef Plate in inches. 44x34 5 x4 63x3} 65x4 Per Dozen. ... 7/6 ... 8/6 ... 12/- The present Edition has been considerably en larged, and contains original Articles by oVe 100 Contributors. The edition is profusely illus trated by engravings. per Dozen. ... 13,6 ... 18- ... 26/6 Price Is,, per post. Is. 3d., THE S WAN’S PLATES, as hitherto made, have heen twice to four times as sensitive as wet collodion plates Finding that plates of still greater rapidity are desired, the Makers of S W AN’S PLATES will from this date produce Plates TEN TIMES AS SENSITIVE AS WET COLLODION PLATES— that is, more than double the old degree of sensitiveness of Swan’s Plates. Owing to the recent application of Machinery in the manufacture of the Plates, the coating is now greatly improved in uniformity and the power of production so increased that orders of almost any magnitude can now be promptly executed. A Sample Negative will be sent post free for Is. Printed Instructions for working these Plates will be sent poet free on application to the Makers. Personal Instructions will also be freely given in Mr. Swan’s Laboratory, but for this an arrangement must be made, beforehand with Messrs. Mawson and Swan. G. WHARTON SIMPSON, M.A., EXTRA-RAPID GELATINE EMULSIONau Fully equal in Rapidity and Quality to the very best Plates in the market; Sets and Dries quickly ; Develops easily, clean st'free, 2/6. liantly ; keeps well, and never frills. Price—5 ozs, 4/6 ; 10 ozs., 8/6 ; pint, 16/-, Packages included. Two-oz, Sample, P A Pint will Coat fully Two Grots of Quartcr-pla'es. POSTAL ADDRESS- W. J. WILSON) 2, Westwick Gardens, Hammersmith, W• Upon Orders amountiny to over €2, accompanied with a remittance, 10 per cent, discount will be allowed. MAWSON & SWAN, NEWCASTLE-ON-TYNE.