1 Materials for Permanent Painting, by Maximilian Toch, published by D. Van Nostrand Company (1911), New York.

2 Madder Lake and Alizarin Lake are the same, excepting in name.

3 Zinnober is German for Vermilion.

4 Chemistry and Technology of Paints, Maximilian Toch. D. Van Nostrand Company (1916); pp. 254-259.

5 Constant White is also sold under the name of Permanent White, or Blanc Fixe. It has very little hiding power when wet, but dries out perfectly opaque. It also possesses very little staining power, by which is meant that a very small quantity of some other tint will change its character much more readily than it will Zinc White.

6 Permanent White.

7 Lapis Lazuli.

8 Lapis Lazuli.

9 The Chrome Green of Commerce is a mixture of Prussian Blue and Chrome Yellow.

10 Paris Green.

11 Barium Yellow.

12 Zinc Yellow.

13 Strontium Yellow.

14 Materials for Permanent Painting (Toch) pp. 48-52.

15 Chrome Green must not be confounded with the Chromium Greens, but is a mixture of Chrome Yellow and Prussian Blue.

16 Harrison Red is a coal tar color similar in shade to English Vermilion, but ten times stronger, and is best used as a glaze, or as a solid pigment by itself.

17 Sold under the name of Permalba, Toxitan, etc.