"8. Wash thoroughly after and before fixing.
"9. Make a sensitizing bath of a strength likely to give the best results with the negatives to be printed.
"10. Print in the shade, or direct sunshine, according to the density of the negative."
[CHAPTER XVIII.]
PRINTING ON PLAIN PAPER.
Prints on plain paper are sometimes of use; for instance, they form an excellent basis on which to colour. They are of course duller than an albumenized print, since the image is formed more in the body of the paper than on the surface. The following formula may be used:—
| Ammonium chloride | 60 | to | 80 | grains |
| Sodium citrate | 100 | " | ||
| Sodium chloride | 20 | to | 30 | " |
| Gelatine | 10 | " | ||
| Distilled water | 10 | ounces | ||
| Or, | ||||
| Ammonium chloride | 100 | grains | ||
| Gelatine | 10 | " | ||
| Water | 10 | ounces | ||
The gelatine is first swelled in cold water, and then dissolved in hot water, and the remaining components of the formulæ are added. It is then filtered, and the paper is floated for three minutes, following the directions given on [page 10]. If it be required to obtain a print on plain paper in a hurry, a wash of citric acid and water (one grain to the ounce) may be brushed over the back of ordinary albumenized paper, and, when dried, that side of the paper may be sensitized and printed in the ordinary manner. For cold tones the wash of the citric acid may be omitted.
The toning and fixing are the same as described in [Chapters XII.] and [XIII.]