Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Professor Ernest Henry Starling FRS 'Will you look at the enclosed draft for the Board of Agriculture and return it to me with any alterations you think that is required? I send with it a copy of your original estimate to show how my figures are made out: you will notice that I have added £30 on to the Incidental Expenses to make up the total to the round figures previously agreed upon.' 7 January 1915