ii Proceedings. {October 6th, igoj. 



(4to., Newcastle-upon-Tyne, 1903), presented by the Committee 

 of the Society ; '■'Report on the Collections of Natural History... 

 of the '■Southern Cross,^" (8vo., London, 1902); "Guide to the 

 Coral Gallery... in the British Museum (Natural History)" 

 (8vo., London, 1902) ; " Handbook of Instructions for Collectors," 

 {i6mo., London, 1902), presented by the Trustees of the British 

 Museum ; '■'Reports of the Sleeping Sickness Commissions^ No. i. 

 (8vo., London, 1903); "Reports to the Malaria Committee," 8th 

 set (8vo., London, 1903), presented by the Royal Society of 

 London. 



Dr. Henry Wilde, F.R.S., read a paper entitled, " On the 

 Resolution of Elementary Substances into their Ulti- 

 mates and on the Spontaneous Molecular Activity 

 of Radium." 



Mr. Thomas Thorp, F.R.A.S., exhibited a specimen of 

 about six milligrams of radium bromide, and showed its effects 

 on a barium platino-cyanide screen in the dark ; a Crookes's 

 spinthariscope ; and a photograph of the head of the late Queen 

 taken through the substance of a copper coin from which the 

 reverse had been ground away. 



Mr. Thorp also mentioned that a minute quantity of the 

 radium salt mixed with zinc sulphide and a little gum water 

 made an excellent luminant for noting the time when applied to 

 the hands of a watch in the dark. 



A paper by Mr. E. A. Newell Arber, M.A., F.L.S., F.G.S., 

 entitled, "Notes on Fossil Plants from the Ardwick 

 Series of Manchester," was communicated by Professor 

 F. E. Weiss, D.Sc, F.L.S. 



General Meeting, October 20th, 1903. 



Professor W. Boyd Dawkins, D.Sc, F.R.S., President, 

 in the Chair. 



Mr. Henry Guppy, M.A., Librarian of the John Rylands 

 Library; Mr. Jonathan Barnes, F.G.S., Higher Broughton ; 



