The Dictionary Of Photography

A True Historic Record Of The Art & Practice Of Photography 100 Years Ago.

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Development and Developers
Stock Solutions.
No. i.
Oxalate of potash Chloride of ammonium Bromide of potassium ... Distilled water ...
2 ozs. 40 grs. 20 .. 16 ozs.
No. 2.
Sulphate of iron ...        ...        ...        4 drms.
Citric acid ... ... ...        ...        ...        2 ..
Alum ... ... ... ...        ...        ...     - 2 ..
Distilled water ... ... .^.        ...        ...      16 ozs.
Having mixed equal parts of the above solutions (adding always No. 2 to No. 1), place the exposed opal film uppermost in a developing dish and pour the mixture evenly over the plate, rock the dish during the development, and watch its progress by a ruby or deep yellow light. When the image appears to have acquired the detail and vigour desired in the finished picture, wash the plate well under a tap for 2 minutes and then immerse for 10 minutes in the
Fixing Solution,
Hyposulphite of.soda ... ... ... ... 4 ozs.
Water ...        ............... 16 ..
The plate must now be well washed in running water for 1 hour to remove the hyposulphite of soda, when it will be ready for toning in the sulpho-gold toning bath to a rich velvety black.
Stock Solutions for Toning. No. 1.
Chloride of gold           ...... ... ... 15 grs
Distilled water ... ... ... ... ... 8 ozs.
No. 2.
Acetate of soda           ... ... ... ... I oz.
Sulphocyanide of ammonium ... ... ... 1 drm.
Distilled water to make         ... ... ... 8 ozs.
When the desired shade has been obtained, the picture should be well rinsed under the tap, and it may now be cleared of the
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