Copy letter from Robert William Frederick Harrison, to the Under Secretary of State, India Office 'Sir, Adverting to Professor Larmor's letter of February 22nd, I beg leave to point out that by a clerical error a wrong reference to a letter last year from this Office was given. The letter referred to as of May 5th should be dated July 14th. I am, Sir, your obedient servant, Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 27 February 1904