Chapter III: TECHNOLOGY.--How to Produce Permanent Photographic Pictures
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on Terra Cotta, Glass, etc.--With recipes and full directions.
How to Make Paper Photo Negatives.--Full directions.
Some of the Uses of Common Alum.
An Improved Cloth Stretching Machine.--With an engraving.
Purification of Woolen Fabrics by Hydrochloric Acid Gas.
Apparatus for Preventing the Loss of Carbonic Acid in Racking
Beer.--With an engraving.
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Scientific American Supplement, No. 401, September 8, 1883Chapter III: TECHNOLOGY.--How to Produce Permanent Photographic Pictures
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