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).
Laboratory report on the percentage distillate of two different petrols at varying temperatures.
| Identifier | ExFiles\Box 20\6\ Scan054 | |
| Date | 11th August 1921 | |
| R.H. 925A (100 T) (S H.{Arthur M. Hanbury - Head Complaints} 796 10-12-20) C. 2947 X985 Hs.{Lord Ernest Hives - Chair} X985 X4305 H12/EB11.8.21. Laboratory. Re 2 Petrols submitted to-day. (Tank) (Bottles) Lighter Spirit (Round bottle). Heavy Spirit (Medicine bottle). Temperature. Percentage Distillate. 100 C. 6.8 - 110 14.0 - 120 21.8 - 130 36.2 - 140 46.4 - 150 60.2 - 160 73.2 18.4 170 82.8 37.6 175 86.6 - 180 - 54.2 190 - 69.4 200 - 77.2 205 - 83.4 These are heavy spirits. Hl. He | ||