IV 



May 15, 1879. 



Page 



Note on a recent Communication by Messrs. Liveing and Dewar. By 



J. Norman Lockyer, F.R.S 45 



Sur la Limite Ultraviolette du Spectre Solaire. Par Mons. A. Cornu .... 47 



On an Induction- Currents Balance, and Experimental Researches made 

 therewith. By Professor D. E. Hughes 56 



Some Researches with Professor Hughes' new Instrument for the Measure- 

 ment of Hearing : the Audiometer. By Benjamin Ward Richardson, 

 M.D., LL.D., F.R.S 65 



Note on the Invention of a Method for making the Movements of the 

 Pulse Audible by the Telephone : the Sphygmophone. By Benjamin 

 Ward Richardson, M.D., LL.D., F.R.S. 70 



On the Capillary Phenomena of Jets. By Lord Rayleigh, F.R.S 71 



May 29, 1879. 



On the Conduction of Heat in Ellipsoids of Revolution. By C. Niven, 

 M.A., Professor of Mathematics, Queen's College, Cork 98 



On a new Method of Investigating the Magnetic Lines of Force in 

 Magnets, demonstrating the Obliquity of the Equator and Axis of Bar 

 Magnets. By Richard C. Shettle, M.D 102 



Preliminary Report to the Committee on Solar Physics on a Method of 

 Detecting the Unknown Inequalities of a Series of Observations. By 

 Balfour Stewart, F.R.S., Professor of Natural Philosophy in Owens 

 College, Manchester, and William Dodgson 106 



Researches on Explosives. No. II. (Fired G unpowder.) By Captain 

 Noble, late R.A., F.R.S., F.R.A.S., F.C.S., and F. A. Abel, C.B., 

 F.R.S., V.P.C.S 123 



Note on the Spectrum of Sodium. By J. Norman Lockyer, F.R.S 140 



List of Presents 141 



No. 197.— June 12, 1879. 

 Annual Meeting for the Election of Fellows ..; 150 



June 19, 1879. 



On the Existence of Liebreich's Protagon in the Brain. By Professor 

 Arthur Gamgee, M.D., F.R.S., Owens College, Manchester, and Ernst 

 Blankenhorn, Ph. I) 151 



Note on the Existence of a Milk-curdling Ferment in the Pancreas. By 

 William Roberts, M.D., F.R.S., Physician to the Manchester Royal 

 Infirmary 157 



On some Recent Improvements made in the Mountings of the Telescopes 

 at Birr Castle. By the Earl of Rosse, D.C.L., LL.D., F.R.S 157 



