Paint & Colour Mixing / A practical handbook for painters, decorators and all who have to mix colours, containing 72 samples of paint of various colours, including the principal graining grounds

by Arthur Seymour Jennings

1. Purity of the material.

2. Purity of the tone; brilliancy; richness, which indicate the amount of care in selection.

3. Fineness of grinding or preparation; this means the degree of the division of the particles and upon the completeness of such division will depend.

4. Its spreading capacity.

5. Its body. This applies, of course, only to opaque or semi-opaque colours. Body is opacity, and means capacity to conceal the surface to which the paint is applied, and must not be confused with spreading. It is an inherent quality.

6. Its staining power or tinting strength with white or colours.

7. The quality of purity of the tint with white.

8. If a paste colour, the consistency of the paste.

9. Transparency of transparent colours and the quality of the transparency.

10. The permanency of the colour.