Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to A. Earl, H. M. Customs and Excises, Mount Pleasant Depot, No.1 Regarding the parcel of [biological] tissue preserved in spirits from Dr. A. W. Grace. States that although the parcel is for Henry Hallett Dale, Secretary of the Royal Society, he is currently staff of the National Institute for Medical Research. Explains that the Institute is entitled to take spirits duty free and asks if it can be delivered there by the Customs Office. 23 February 1928