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Evening Star, Issue 20697, 21 January 1931, Page 9

The heat which accompanies the over coming of friction is an example of the principle of the conservation of eneigy. The power expended in overcoming the friction between two bodies—in over coming resistance offered by the pros sure of one against the other—produces an amount of heat exactly proportional to that power. The heat produced is nothing but the original power in another form, and is itself capable of performing mechanical or other wort. Mrs Anna Kreisler, the oldest inhabitant of Latvia, Baltic Soa, who has died at the age of 128, lived for many years almost entirely on raw herrings, which she ate after dipping them in weak black coffee. She attributed her longevity tq this diet.