The Dictionary Of Photography

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

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Albumenised Paper
for by using a developer of higher or lower temperature. When sufficiently dense it may be fixed in -
Hyposulphite of soda ......... I oz.
Water         ............... 6 ozs.
or a 20-grain solution of cyanide of potassium. These slides may be reduced or intensified by any of the ordinary methods ; though, for the latter process, mercuric chloride, followed by ammonia, gives the most satisfactory tones. The image may be toned with the old sel d'or bath, the following being a near equivalent: -
Sat. sol. of hyposulphite of soda...... ozs.
Chloride of gold............ I gr.
Or a platinum bath may be used -
Bichloride of platinum ......... 1 gr.
Water         ............... I oz.
After washing and drying, the slides will be ready for binding.
Albumenised Paper. Paper coated with albumen and salt. The following short directions will give some idea of the method of procedure: - Absolutely fresh eggs are generally recommended, but many professional albumenisers prefer stale eggs as giving a more even and lustrous coating. Crack each egg into a separate cup or measure before mixing with the bulk, so that in case of the yolk breaking the whole of the albumen may not be spoilt. Take out the germ of each egg. Every fair-sized egg will yield about 7 drms. of albumen.
Albumen ... ... ... ... ...        6 ozs.
Chloride of ammonium or sodium ...      6o grs.
Rectified spirit ... ... ... ...      96 mins.
Distilled water............      14 drms.
Dissolve the salt in the spirit and water, add to the albumen and beat with an egg-whisk for fifteen minutes ; allow it to settle and filter it through a tuft of cotton-wool, previously well washed with distilled water. This is sufficient for a quire. The paper should be either Saxe or Rive. Put the albumen into a large flat dish; take the paper by two opposite corners, and bring the hands close together, so as to make the paper bow out in the middle ; lay the middle of the paper on the surface of the
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