FOOD UNITS.
| Linseed cake | 133 |
| Oatmeal | 117 |
| Bran | 109 |
| English wheat | 106 |
| Cacao shells | 102 |
| Maize (new crop) | 99 |
| Meadow hay | 68 |
| Rice husks | 43 |
| Wheat straw | 41 |
| Mangels | 12 |
These analytical results have been supported by practical feeding experiments in America and Germany (see full account in Zipperer's book, The Manufacture of Chocolate). Prof. Faelli, in Turin, obtained, by giving cacao shell to cows, an increase in both the quantity and quality of the milk. More recent experience seems to indicate that it is unwise to put a very high percentage of cacao shell in a cattle food; in small quantities in compound feeding cakes, etc., as an appetiser it has been used for years with good results. (Further particulars will be found in Cacao Shells as Fodder, by A.W. Knapp, Tropical Life, 1916, p. 154, and in The Separation and Uses of Cacao Shell, Society of Chemical Industry's Journal, 1918, 240). The price of shell has shown great variation. The following figures are for the grade of shell which is almost entirely free from cocoa: