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).
Note on the effects of water circulation speed and the priming effect of dirty water.
| Identifier | Morton\M1.6\ img011 | |
| Date | 6th December 1921 | |
| 6.12.21. contd. - 2 - Cannot believe any advantage can possibly come from lower speed of water circulation which seems certain to make everything worse. Dirty water will prime, such as soda water, milk, meal. water etc. R.{Sir Henry Royce} | ||