A Complete Epitome of the Present State of Photography. PHILADELPHIA: BENERMAN & WILSON, PUBLISHERS. CONTENTS. ECLIPSES OF THE SUN AND MOON, ANNALS OF PHOTOGRAPHY FOR 1869, GUIDES TO PRACTICE-BY VARIOUS CONTRIBUTORS: On "Touching" Landscape Negatives. By James Mudd,....... PAGE 5 5 6-17 18, 19 Spectrum Analysis of some of the Chemicals used in the Negative Process. By J. E. Mayall, M.R.I.,.. "Sitters" that I do not like. By Jabez Hughes,...... The Sky: How to Photograph it, and Why. By H. P. Robinson,.. 20-22 23 ................ 30 31 33 35 36 On Various Prints from Weak Negatives. By Valentine Blanchard,. A Few Words on Development. By Lieut.-Colonel Stuart Wortley, Carbon Eburneum, a New Adaptation of Two Old Processes. By N. K. Cherrill, 37 40 41 42 One or Two Things Worthy to be Known. By J. G. Tunny,.............................................................. 43 43 45 On some Alleged Difficulties in Printing in Carbon and Other Permanent Pigments. By J. R. Johnson,.. On the Improbability of the Discovery of Photography in Natural Colors. By 47 49 "Ivoire Dur" Pictures. By F. R. Window,. Chromo-Photography, or Photo Miniature. By A. de Constant, On the Chloro-Chromic Light. By John Spiller, F. C. S.,..................................... By F. G. Eliot,. Stippling Glass in Studio. By B. J. Edwards,. GUIDES TO PRACTICE.-BY VARIOUS CONTRIBUTORS (continued): An Easy and Certain Method of Printing on Wood Blocks. By W. T. Bovey, 70 The Dark Room, and How it should be Lighted. By J. G. Tunny,. Single Lantern for Dissolving Effects. By Thomas Gulliver,.. Hints on Retouching Portrait Negatives. By G. Croughton,..... The Relations between Photographer and Sitter. By Charles Pearce,. PAGE Reproducing Negatives. By Dr. Vogel,.. The Uses of Aqueous Solutions in Photography. Condensed from A. Davanne, 84 Mr. Robinson's Golden Syrup Solution for Preserving Wet Plates,. Herr Albert's Mechanical Printing Process,. Mr. Sarony's Photo-crayon Portraits,. Lighting the Studio. By Adam Salomon,. PROCESSES AND FORMULE: Silver Printing Process-Modes of Toning-Fixing Silver Prints-Printing with Collodio-Chloride of Silver on Paper and Opal Glass-Other Printing Processes-Dry Processes-Selecting, Keeping, and Making Collodion-The Manufacture of Collodion-The Nitrate Bath: To Make, Keep, and Rectify It-Development and Intensifying........... NEW AND MODIFIED PROCESSES: Collodio-Chloride Transfer Process-Albumeno- Chloride of Silver for Printing on Painter's Canvas, etc.-Developing and Toning Collodion Prints, by J. M. Burgess-Portraits with a Pure Dead White Surface upon Talc or Glass, by Charles Durand-Paper Sensitized with Carbo- nate of Silver-Preliminary Coating of Albumen in Wet Plates-Dark Room Windows-Mixing Collodion to Suit all Purposes, by W. Knowlton-Cockling of Large Prints in Printing Frame-Wooden Dishes for Silver Solutions, by M. Clouzard-Minute Bubbles and Yellow Spots-An Easy Method of Testing the Strength of Solution of Nitrate of Silver, by W. H. Wilson-Practical Silver Saving-Permanganate for Rectifying Baths-Carbon Processes with- out Transfer-To Preserve Films from Splitting in Drying, or Dissolving on PREFACE THE Scope and intention of the YEAR-BOOK OF PHOTOGRAPHY are so well known, and have been so extensively and emphatically sanctioned, that few explanatory or prefatory remarks are necessary in introducing each annual issue. The growth of an art like photography depends much on the use made of the lessons of experience, and to render such lessons available the experience needs to be collated, winnowed, and garnered. This is one of the essential aims of this little annual. The fruits of a year's labours are here aggregated, selected, arranged, condensed. Whatever of discovery or important novelty belongs to the year is here definitely stated. The less tangible changes which consist in minute nuances of improvement and modification are embodied in re-statements of the processes to which they belong, the whole constituting an epitome of the most improved practice of the art. Besides this photographic abstract and brief chronicle of the time, the Editor has pleasure in presenting an unusually interesting series of original articles, written by gentlemen, all of whom hold |