Copy letter from Robert William Frederick Harrison, to Professor Arnold William Reinold, Fellow of the Royal Society 'Dear Professor Reinold, Referring to your application for Phil. Trans. Vol. 191, A, this part appears to have been already despatched to you. The parcel was sent by P. D. C. on July 21, 1899, and we hold the Carriers signature for it. I am, Yours faithfully Robert Harrison Asst. Sec. R. S. [Assistant Secretary, Royal Society]'. 5 March 1900