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To Develop a Negative

This is done by removing the plate from the holder, and, holding the plate in a horizontal position, flowing it with the developing solution. (See No. 3151.) If properly timed or exposed, the image begins to appear. When the details of the drapery, if a portrait, appear and the solution seems to have lost its power, the plate is thoroughly washed under a stream of clean water. If the image is sufficiently strong and vigorous, it is cleared" by placing the plate in the fixing bath, and that portion of the film not acted upon by the light is dissolved away, leaving the image upon the glass. After a thorough washing in water, the plate is put in a rack to dry, after which it is slightly warmed and varnished.