The Bacillus of Long Life / A Manual of the Preparation and Souring of Milk for Dietary Purposes, Together with an Historical Account of the Use of Fermented Milks, from the Earliest Times to the Present Day, and Their Wonderful Effect in the Prolonging of Human Existence

by Loudon M. Douglas

[36] Prolongation of Life.

[37] An accurate census of Bulgaria is being prepared and will exhibit the cases of long life in that country.

[38] See A. Rosam, Österreichische Molkerei Zeitung, 15, p. 31.

[39] Revue générale du Lait, vii., pp. 8 and 9 (letter from Dr. Otakar Laxa of Prague, Bohemia, to the author).

[40] On the Prolongation of Human Life, by Élie Metchnikoff; also The Century Magazine, Nov., 1909, "The Utility of Lactic Microbes," by the same author.

[41] Century Magazine, Nov., 1909.

[42] See Annals of Dairying in Europe, by Loudon M. Douglas.

[43] Adapted from a report by Robert E. Turnbull, in Live Stock Journal.

[44] Facts about Milk, by R. A. Pearson, B.S., Washington.

[45] Care and Handling of Milk, Marshall and Wright, Bulletin 221, Michigan, 1904.