The practical printer : a complete manual of photographic printing (1874)
Hearn, Charles W · Philadelphia : Benerman & Wilson · leaf 33
to that strength which is best for the paper, negatives, &c. Then add the other nitrates (or whatever other chemicals that might have been used in the making of the bath in the first place) to the bath, see to the alkalinity , filter, and the bath will be ready for use. Fusing the Bath. Fig. 4.… … Reduce to the proper strength for the printing-bath, and then filter the solution. The organic matter will be left in the filter. Now make up your bath as has before been ad¬ vised, and then it is ready for use. Sunning the Bath. The bath is made alkaline and placed out in the sunlight, for the…
Photography -- Printing processes · Photographs on porcelain
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
![An illustration from Io. Bap. Portae Neopolitani de distillatione lib. IX : quibus certa methodo, multipliciq[ue] artificio, penitioribus naturae arcanis detectis, cuius libet mixti in propria elementa resolutio, perfectè docetur (1608)](https://img.insideoutlibrary.com/img/200/ia-iobapportaeneopo00port-34-23.webp)
