Copy letter from Robert William Frederick Harrison, to the Under Secretary of State, Colonial Office, S.W. 'Sir, I have the honour to acknowledge the receipt of your letter of the 27th May, (17152) transmitting reports on Horse-sickness by Professor Koch which have been received from the High Commissioner for South Africa. I am, Sir, your obedient servant, Robt [Robert] Harrison Asst. [Assistant] Secretary R.S. [Royal Society]'. 28 May 1904