Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to W. V. Sayer Esq.; National Institute for Medical Research, Hampstead, N.W.3. Instructs W. V. Sayer to pack Dr [Arthur] Grace's microtome for shipment and send it to Messrs W. Smith and Co. Also instructs him to order bacteriological wool and test tubes from Messrs Baird and Tatlock, which will be collected by Corporal Radford when he calls at the National Institute before sailing [to British Guiana for the Filariasis Commission]. 10 March 1927