"It can hardly be regarded as a substitute for tea and coffee; it is, in fact, a substitute for all other kinds of food, and when taken with some form of bread, little or nothing else need be added at a meal. The same may be said of chocolate."
FOOTNOTES:
[1] According to Drs. Playfair and Lankester:
| Tea | contains | 3 | per cent. | theine. |
| Coffee | " | 1¾ | " | caffeine. |
| Cocoa | " | 2 | " | theobromine. |
Probably the proportion of caffeine in coffee would be more correctly stated as 1¼ per cent. Theine and caffeine are identical, but theobromine (C7H8N4O2) differs from both in the greater proportion of nitrogen which it contains.
[2] Dr. Johnson's analysis:
| Flesh formers in each hundred parts. | |
| Dried milk | 35 |
| Cocoa essence | 34¾ |
| Cocoa-nibs | 23 |
| Best French chocolates | 11 |
[3] Mr. O.L. Symonds, "Commercial Products of the Vegetable Kingdom."