From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Graph showing the freezing point of different anti-freezing solutions at various concentrations by volume.
| Identifier | ExFiles\Box 151\3\ scan0151 | |
| Date | 17th March 1931 guessed | |
| EFFECT OF ANT FREEZING SOLUTIONS FREEZING POINT. CENTIGRADE. -5 -10 -15 -20 -25 % OF ANTI FREEZING COMPOUND BY VOLUME 0 10 20 30 40 50 PURE GLYCERINE OR TRIMETHYLENE GLYCOL ETHYLENE GLYCOL. FREEZING POINT FARENHEIT 32 23 14 5 -4 -13 Hs.{Lord Ernest Hives - Chair} 256 | ||