The Dictionary Of Photography

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

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Gelatino-Chloride
Dissolve the salts in half the water made hot, and make the solution measure 8 ozs. by adding more water. Then add the gold.
X.
The following is a simple bath suggested by Mr. W. K. Burton, although the addition of nitrate of lead is due to Mr. J. Chester Jervis : -
Chloride of gold ............ 6 grs.
Nitrate of lead         ............ 3 ..
Hyposulphite of soda ...... ... 3 ozs.
Distilled water ............ 20 ..
Put the prints direct into the toning bath without washing.
Chloride prints may be easily developed, and by this a great saving of time is effected/ The first method of doing this was by means of gallic acid developers, such a developer being
Gallic acid ............
4 parts
Citric acid ............
... 6 ..
Sodium acetate ......
20 ..
Solution of lead nitrate (10 per cent.)
...15-20 ..
Distilled water .........
... 1000 ..
Warnerke suggested the use of about two feet of magnesium ribbon burnt quite close to the printing frame, by which a very faint visible image is produced, and the print is then developed to full intensity with
Water           ...............1000 parts.
Acetic acid............... 10 ..
Sodium acetate ............ 10 ..
Gallic acid............... 5 ..
When dissolved add
Solution of lead acetate (10 per cent.) ... 10 parts.
The above solution should be diluted with from 5 to 10 parts of water, and the print, without washing, being placed in this, soon gains in intensity, and the development is stopped by placing the print in salt and water, when it should be thoroughly well washed, and toned in the following bath : -
Water           ...............1000 parts.
Hyposulphite of soda         ......... 100 ..
Acetate of lead ............ 10 ,,
Solution of chloride of gold (1 per cent.)... 20 ..
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