CONTENTS. "Vll 



CHEMISTET. 



Page 



Address by William Odling, M.B., F.R.S., F.R.C.P., President of the 



Section -1 



Dr. T. Anderson on sonae Bituminous Substances 2-4 



Dr. Henry Bird on the Utilization of Sewage 24 



Rev. G. Browne on the Prismatic Formation of Ice in certain Ice-Caves and 



Glaciers 24 



Mr. F. Crace-Calvebt on a New Method of extracting Gold from Auriferous 



Ores : 25 



Mr. A. R. Catton on the Molecular Constitution of Carbon Compounds .... 26 



on the Direct Conversion of Acetic Acid into Butyric and 26 



Caproic Acids ^6 



Mr. Stewart Clark's Description of an Apparatus for Estimating the Organic 



Impurities in Atmospheric Air and in Water 26 



Dr. Daubeny on the Thermal Waters of Bath 2G 



Mr. Thomas Fairley on the Action of Hydrogen on Polycyanides 26 



Mr. Frederick Field on a Specimen of Tin-ore hitherto undescribed 27 



Ml". Alphonse Gages on the Artificial Production of Anhydrite 27 



Mr. W. Gee's Accoimt of the Mode adopted at the Bradford-on-Avon Union 



for the Utilization of Sewage 28 



Mr. A. Vernon Harcoubt on the Rate of Chemical Change 28 



Dr. W. Bird Herapath on a New Method of detecting Arsenic, Antimony, 

 Sulphur, and Phosphorus, by their Hydrogen Compovmds, when in mixed 



Gases 31 



Dr. G. IVEMp's Memorandum on Ozone 32 



Mr. A. C. Kirk on the Production of Cold by the Expansion of Air 32 



Mr. Poole King on the Prematm-e Decay of the Frescoes in the Houses of 



, Parliament, its Cause and Remedy 32 



Mr. Maxwell Lyte on an Apparatus for the Preservation or Disengagement 



of Sulphuretted Hydrogen, Carbonic Acid, or other Gases 32 



Dr. Stevenson Macadam on the Pollution of Rivers by the Sewage of 



Towns 32 



Dr. A. T, Machattie's Suggestion on the Detection of Poisons by Dialysis. . 34 



on the Presence of Nickel in Metallic Lead 34 



Professor W. A. Miller's Chemical Examination of a Hot Spring in Wheal 



Clifiord, Cornwall 35 



Dr. S. Mobsman's Obsei-vations on the Constitution of the Atmosphere .... 36 



Mr. A. Noble on Reaumur's Porcelain 36 



Dr. Paul on the Disposal of Town Refuse 36 



Dr. B. H. Paul on Crude Paraffin Oil 36 



on Usefiil Applications of Slag from Iron Smelting 37 



Dr. T. L. Phipson on the Black Stones which fell from the Atmosphere at 



Birmingham in 1858 37 



on the Medicinal Muds of the Island of Ischia, Bay of 



Naples 38 



