|Alternative reference number||NLB/56 p197|
|Title||Copy letter from [Robert William Frederick Harrison, Assistant Secretary of the Royal Society]; to an unknown correspondent|
|Date||[14 January 1919]|
|Description||'It has been suggested that a short summary of the results and conclusions arrived at would add to the usefulness of the paper.|
It has also been pointed out that the words "forced vibration" are used in this paper in a sense that is not in accordance with general usage.'
[The paper in question is illegible, along with any details of its author or the copy letter's recipient.]