|Alternative reference number
|Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Sir Harry Reichel, L.L.D; University College of North Wales, Bangor
|30 November 1915
|Reply to an earlier enquiry from Sir Harry Riechel. Clarifies that in the recent circular letter from the Society on the subject of retaining the services of 'indispensable' scientific men, the word 'indispensable' was used to mean indispensable in the context of war.