SF20 Macerating tank Includes sketch plan of macerating tank for Osteological room, British Museum (Natural History); correspondence with the suppliers Sumerling, Theostatic Company Limited and Simplex Electric Company Limited; brochure for Sun-Vic rototherm inductrial thermometers; plan of the proposed maserating [sic] tank for the British Museum (Natural History); correspondence with T. R. Keeley, Mechanical and Electrical Engineering Division, H. M. Office of Works; description of macerating tank. 1938