LIST OF PLATES
| TO FACE PAGE | |||
| Plate | I. | Six Colour Theories | [4] |
| " | II. | Circles Illustrating Absorption of White Light | [11] |
| " | III. | Diagram Illustrating Analysis of White Light | [13] |
| " | IV. | First System of Charting Colour | [31] |
| " | V. | Second System of Charting Colour | [33] |
| " | VI. | Six Tintometrical Colour Charts | [39] |
| " | VII. | Two Circles | [40] |
| " | VIII. | Absorption Curves of Dyes | [76] |
| " | IX. | Fading Curves of Dyes | [78] |
| " | X. | Comparison Curves of Healthy and Diseased Blood | [80] |
| " | XI. | Specific Colour Curves of Healthy and Diseased Human Blood | [82] |
PURPOSE
The purpose of this work is to demonstrate that colour is a determinable property of matter, and to make generally known methods of colour analysis and synthesis which have proved of great practical value in establishing standards of purity in some industries.
The purpose is also to show that the methods are thoroughly scientific in theory and practice, and that the results are not likely to be changed by further discoveries. Also that out of the work done a new law has been developed, which the writer calls the Law of Specific Colour Development, meaning that every substance has its own rate of colour development for regularly increasing thicknesses.