London: Dawbarn & Ward, Ltd. 1906. 94, , 16 pages. 8vo. Brown cloth with black titling. Endpapers covered with advertisements. Penciled "1906" on the cover. The last 16 pages are a catalog of "Utility books and periodicals" supplied by Dawbarn & Ward, Ltd. Color frontispiece, occasional foxing (mostly to endpapers). A sound copy. Very Good. Cloth. 
A translation of the second German edition of Konig's work.
"Never within the last twenty years has there been so much interest displayed by photographers generally in photography in natural colors, as at the present time. This is undoubtedly due in great measure to the advances which have been recently made in the discovery of new sensitisers, and also to the much greater attention that has been paid to the preparation of suitable light-filters, and the publication of definite formulae for making them...I trust will be found useful as a practical guide to the various color processes that can be adopted by amateurs and others. Photo-mechanical processes have not been included, as they entail the use of material and machinery not usually in the average photographer's outfit." (E. J. Wall, preface)
While represented digitally fairly well, actual copies of the book are not all that common.