Photo-Trichromatic Printing. Preface. Bibliography.

[Prismatic Solar Spectrum.]

Photo-Trichromatic Printing
C. G. Zander
Published by Raithby, Lawrence & Co., Ld., Leicester
This small volume is dedicated to David Harris, Esw., F.R.S.E., F.S.S., of Edinburgh, as a token of sincere regard by the author.


"Let there be Light." — Gen. i., 3.

This book makes no pretension to be a textbook on the optical sciences of chromatics and spectroscopy. I merely intend giving the general reader, artists, and colour-printers in particular, a short outline in the plainest possible language of the causes of colour phenomena and the effects of pigmentary mixtures and combinations. Without at least some elementary knowledge of chromatics, the colour-printer, who attempts Photochromic Three- Colour work, will always grope in the dark, and can never hope to achieve great success. In fact, my experience is, that the lack of knowledge generally prevailing on the subject of chromatics, even amongst those who use colours in earning their daily bread, is unpardonably great, and is one of the reasons why trichromatic printing does not make the headway it deserves. As we should not criticise without being able to supply a remedy, I thought it best to produce a small book which would serve printers and artists as a handy guide without troubling them with scientific intricacies. For the benefit of those who, through the perusal of this booklet, may desire more knowledge, I append a list of books which may be studied with profit. They will supply proofs of the facts which in the compass of these few pages I have only been able to state without fully proving. One of the purposes of our existence — the acquisition of knowledge — is mainly accomplished through the instrumentality of our eyes. It is therefore not surprising that the investigation of colour phenomena is one of the most fascinating of studies, giving endless pleasure quite apart from the utility which it affords to those who use colours in their daily vocation.

I hope that my attempt to explain the laws of colour phenomena and their application to Three-Colour work, in plain homely language — intelligible to every artist or printer requiring to have at least an elementary knowledge of the principles of a process which is one of the most interesting achievements of modern science — will meet with a kindly reception, and that any imperfections caused by the attempt to condense a very wide and difficult subject will be pardoned.

- C. G. Z.

London, April, 1896.

Abney, Captain "Colour Measurement and Mixture" (London, 1891).
Abney, Captain "Colour Vision" (London, 1895).
Rood, 0. N. "Modern Chromatics" (London, 1890).
Bezold, W. von "Theory of Colour" (Boston, U.S.A., 1876).
Chevreul "Colour" (London, 1887).
Field, G. "Chromatography" (London, 1885).
Church "Colour" (London, 1891).
Niewenglowski, G. H. "Les Couleurs et la Photographic" (Paris, 1895).
Vogel, Dr. H. "The Chemistry of Light" (London, 1892).
Lommel, Dr. E. "The Nature of Light" (London, 1895).
Lockyer, J. Norman "The Spectroscope and its application."
Lockyer, J. Norman "Studies in Spectrum Analysis" (London, 1894).
Proctor, R. A. "The Spectroscope and its work" (London, 1888).
Meldola, R. "The Chemistry of Photography" (London, 1891).
Abney, Captain "Photography."

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