class="pginternal" tag="{http://www.w3.org/1999/xhtml}a">Dallmeyer's Wide Angle.

THE TRIPOD OR VIEW CAMERA STAND, 162 THE INSTANTANEOUS SHUTTER, 164 The Drop Shutter—The Prosch Shutters. THE CARRYING BOX, 167 DEVELOPING OUTFIT FOR AMATEURS, 167 Chemical Constituents of—Ferrous Oxalate Development—Cooper's Developer. EASTMAN'S IMPROVED NEGATIVE PAPER, 179 THE ROLL HOLDER, 181 How to Use them. THE ROCHE PAPER FILM, 187 ENLARGING AND DUPLICATING SMALL NEGATIVES, 188 The Copying and Duplicating Camera—Duplicate Negatives by Contact. PRINTING PROCESSES, 192 On Anthony's Gelatino Bromide Paper—Anthony's Collodio Chloride. THE ENLARGING CAMERA, 203 PRINTING WITHOUT SALTS OF SILVER, 207 The Blue Process—Another—The Cyanotype Process with Salts of Uranium—Process for Red Pictures—Process for Green Pictures—Process for Violet Pictures. TRANSPARENCIES ON GLASS OPAL, 212 Development of—Ferrous Oxalate Development—By Wet Collodion. BICYCLE CAMERA, 222 PHOTO MICROGRAPHY, 224

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INTRODUCTION.

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The most important improvement in photographic processes that has been introduced since Maynard first made collodion, and Archer discovered its adaptability to the production of photographic negatives, is the gelatine bromide dry plate.

Wet plate photography had reached its utmost point of adaptability to the demands of the times.

A few men of marked ability, and the skill of long study and practice, had reached the point of highest excellence in working with collodion, and the great multitude were pressing on toward that designated height to which it was given to but few to attain.

It had been demonstrated that wonderfully beautiful effects could be