The a B C of Photo Micrography a Practical Hand book for Beginners
The a B C of Photo Micrography a Practical Hand book for Beginners
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In our eReader you can find the full English version of the book. Read The a B C of Photo Micrography a Practical Hand book for Beginners Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The a B C of Photo Micrography a Practical Hand book for Beginners
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To quickly assess the difficulty of the text, read a short excerpt:
All gelatine emulsions coated on paper are liable at times, especially in hot weather, to softening whilst wet, usually in spots, rarely all over the entire surface. Even Velox is not entirely free from it, though more nearly so than any other paper I have ever used. In this condition it is like the most tenacious glue, insoluble in water cold or hot, and sticks with such pertinacity to the ferrotype plate as to become inseparable from it except by de- struction of the paper and practical ruin ...of the plate for squeegeeing purposes. I have now a plate to which two prints stuck in this manner several years ago, and thus far they have resisted every attempt at removal. I keep it as a terrible example and for experi- mental purposes. Fortunately I long ago dis- covered a preventive remedy for this defect, and the perfect contact of plate and print is very easily and certainly effected.
When the prints have been fully washed and freed from all traces of hypo, they should IO6 THE A B C OF PHOTO - MICROGRAPHY be transferred to a tray containing a solution of water and formaldehyde (in the propor- tions of one drachm of the latter to four ounces of the former), in which they are to remain until needed.
What to read after The a B C of Photo Micrography a Practical Hand book for Beginners?
You can find similar books in the "Read Also" column, or choose other free books by William Henry Walmsley to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
All gelatine emulsions coated on paper are liable at times, especially in hot weather, to softening whilst wet, usually in spots, rarely all over the entire surface. Even Velox is not entirely free from it, though more nearly so than any other paper I have ever used. In this condition it is like the most tenacious glue, insoluble in water cold or hot, and sticks with such pertinacity to the ferrotype plate as to become inseparable from it except by de- struction of the paper and practical ruin ...of the plate for squeegeeing purposes. I have now a plate to which two prints stuck in this manner several years ago, and thus far they have resisted every attempt at removal. I keep it as a terrible example and for experi- mental purposes. Fortunately I long ago dis- covered a preventive remedy for this defect, and the perfect contact of plate and print is very easily and certainly effected.
When the prints have been fully washed and freed from all traces of hypo, they should IO6 THE A B C OF PHOTO - MICROGRAPHY be transferred to a tray containing a solution of water and formaldehyde (in the propor- tions of one drachm of the latter to four ounces of the former), in which they are to remain until needed.
What to read after The a B C of Photo Micrography a Practical Hand book for Beginners?
You can find similar books in the "Read Also" column, or choose other free books by William Henry Walmsley to read onlineMoreLess
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