CONTENTS. 



NOTICES AND ABSTRACTS 



OF 



MISCELLANEOUS COMMUNICATIONS TO THE SECTIONS. 



MATHEMATICS AND PHYSICS. 



Mathematics. 



Page 



Introductory Remarks by the President, the Earl of Rosse 1 



Mr. R. Campbell on the Probability of Uniformity in Statistical Tables 3 



Lieut.-Colonel Shortrede on Calculating Lunars 4 



Professor Hennessy on the Figure of an imperfectly Elastic Fluid 5 



Professor Lindelof, Note on the Calculus of Variations 5 



Professor J. C. Maxwell on the Dynamical Theory of Gases 9 



Abbe Moigno's Supplement to Newton's Method of resolving Equations 9 



Mr. G. Johnstone Stoney's Note on the Propagation of Waves 9 



Mr. J. Smith on the Relations of a Circle inscribed in a Square 10 



Mr. C. M. Willich on the Angles of Dock-Gates and the Cells of Bees 10 



Light, Heat, Electricity, Magnetism. 



Sir David Brewster on a New Species of Double Refraction 10 



on the Decomposed Glass found at Nineveh and other 



places 11 



Mr. H. Cox on the Submergence of Telegraph Cables 11 



Mr. J. P. Gassiot on the Stratified Electrical Discharge, as affected by a Move- 

 able Glass Ball '. 11 



Rev. T. P. Dale and J. H. Gladstone on the Relation between Refractive In- 

 dex and Volume among Liquids 12 



Mr. G. F. Harrington on the Theory of Light 12 



Mr. J. P. Joule's Notice of Experiments on the Heat developed by Friction 



in Air ." 12 



Mr. J. B. Lindsay on the Transmission of Electricity through Water 13 



Rev. Dr. Lloyd on the Affections of Polarized Light reflected and transmitted 



by thin Plates 14 



Professor J. C. Maxwell on the Mixture of the Colours of the Spectrum 15 



Mr. Mungo Ponton on certain Laws of Chromatic Dispersion 15 



■ on the Law of the Wave-lengths corresponding to certain 



points in the Solar Spectrum 20 



Mr. John Smith on the Production of Colour and the Theory of Light 22 



Mr. B. Stewart on Radiant Heat 23 



