Copy letter from Robert William Frederick Harrison, to Professor Thomas Clifford Allbutt, Fellow of the Royal Society Encloses for information letters from Dr [Samuel Rickard] Christophers on Anopheles to Lord Lister, Accra, 20 April 1900, and Sir M Foster, Accra, 2 May 1900 [no enclosures], which he has been instructed to circulate amongst members of the Malaria Committee. Asks for return of the letters with any remarks, especially as to publication. 1 June 1900