1. Siehe Journ. Soc. Chem. Ind.25, 160.
2. Zsigmondy: „Zur Erkenntnis der Kolloide“, 65 ff.
3. Journ. Amer. Chem. Soc.29, 1622.
4. Prof. Dr. A. Jacobi: „Intestinal Disease of Infants and Children“1, 62 ff. Meats-Composition and Cooking, by Chas. D. Woods, 10, 1904 (Farmers Bulletin Nr. 34, U. S. Dept. Agricult.). The Chemical Composition of American Food Materials, by Atwater and Bryant, 1906 (Bulletin Nr. 26, U. S. Dept. Agricult.).