Note 105 — I. Preservation of Objects composed of Inorganic Substances.

[Muffle furnaces may be obtained from Messrs Fletcher, Russell and Co., Warrington. If electricity is available, the electric muffle may be used. These may be obtained from Messrs A. Gallenkamp and Co., 19, Sun Street, Finsbury Square, London. The Heat-recorders supplied by H. Watkin, 225, Waterloo Road, Burslem, will be found very convenient in place of Seger’s cones, which may be obtained from Messrs Brady and Martin, Northumberland Road, Newcastle-on-Tyne. Transl.]