Most Viewed

- The Aniline Process
- The Primuline Or Diazotype Process
- The Cuprotype Burnett's Process
- A Poitevin's Process 1870
- The Cyanofer Pellet's Process
- The Cyanotype Or Blue Process
- The Uranotype
- Graphotypy
- Dr Tl Phipson's Process 1861
- Choice Of Paper Sizing

Least Viewed

- Causes Of Failures
- Preparation Of Red Yellow Or Blue Tissues
- X's Process 1865 Secrets Of The Uranotype
- Tracing Process On Metal
- Houdoy's Process 1858
- Godefroy's Process 1858
- How To Make A Negative Drawing
- Printing On Wood Canvas Opal And Transparencies
- Guarbassi's Process 1867
- Cj Burnett's Process 1857

L Liesegang's Process 1865

Pour ammonia into a nitrate of uranium solution, wash the precipitate of
uranate of ammonia in distilled water, then dissolve in citric acid.

Mix this solution of citrate of uranium and a little of a solution of
chloride of gold with a paste prepared by dissolving tapioca in hot water.
The quantity of chloride of gold must be small and the heat not too great,
otherwise the gold would be reduced.

Spread the mixture with a sponge on the paper, which takes a brilliant
yellow color, and expose when quite dry; the proofs have the delicacy and
vigor of albumen prints.

The proofs come from the frame with a bluish-black color; they should not
be toned, but merely fixed by washing until the yellow color of the paper
has disappeared.

The color of the picture can be changed to a purple by a solution of
chloride of tin.





Next: Guarbassi's Process 1867
Previous: Dr Jb Obernetter's Process 1863

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