Vlll CONTENTS. 



Page 

 Dr. J. H. Gladstone on some Points connected with the Chemical Con- 

 stituents of the Solar System . .' . 41 



Professor Hattghton, Summary of the First Reduction of the Tidal Obser- 

 vations made by the recent Arctic Expedition 42 



Professor Hennessy on the Physical Properties of Solids and Liquids in Re- 

 ' lation to the Earth's Structure 42 



Mr. A. Mallock on the Molecular Changes which take place in Iron and 

 Steel while Cooling 42 



Professor Osborne Reynolds on the Rate of Progression of Groups of 

 Waves, and the Rate at which Energy is transmitted by Wind 42 



Messrs. C. H. Stearn and J. W. Swan on a new Form of Sprengel's Air- 

 pump 43 



Sir W. Thomson, Solutions of Laplace's Tidal Equation for certain special 

 Types of Oscillation 43 



on Diurnal and Semidiurnal Harmonic Constituents of the 



Variation of Barometric Pressure 43 



on a Marine Azimuth Mirror and its Adjustments 43 



• on the Possibility of Life on a Meteoric Stone falling on the 



Earth 43 



Mr. C. J. Woodward on a new Form of Apparatus to illustrate the Inter- 

 ference of Plane Waves 43 



CHEMISTRY. 



Address by Professor Abel, F.R.S., President of the Section 43 



Professor Barff on the Formation of the Black Oxide of Iron on Iron 

 Surfaces, for the Prevention of Corrosion 50 



Mr. P. Bbaham on the Explosive Character of a Mixture of Magnesium and 

 Potassium Chlorate 5-1 



Mr. T. Fairley on Hydrogen Peroxide and some Uranium Compounds 51 



on the Thermo-ehernistry of Oxygen 51 



Professor J. H. Gladstone on some Candles altered by long Exposure to 

 Sea-water 51 



Mr. A. Vernon Harcourt on the Application of a new Unit of Light to 

 the Examination of Coal-gas 51 



Mr. Charles T. Kingzett on Hederic Acid and Resin of Scammony 52 



Dr. B. H. Paul and Mr. C. T. Kingzett, Preliminary Account of the Al- 

 kaloids from Japanese Aconite 52 



Mr. C, T. Kingzett and M. Zingler on the Albumen of Commerce 52 



Mr. James Mactear ou an Improved System of Alkali Manuf acture 52 



— — on a new Mechanical Furnace used in the Alkali 



Manufacture and for Calcining Purposes generally 52 



— — °n the Regeneration of Sulphur employed in the Alkali 



Manufacture by the Mactear Process 52 



Dr. Odling on some Properties of Gallium 53 



on Benzine Derivatives 53 



°u Dr. W. Gibb's Researches on Cobaltamines 53 



Mr. S. E. Phillips on the Constitution of Mellitic Acid 53 



on the Principle of Uric Acid Genesis 53 



