Vlll CONTENTS OF VOL. XL. FOURTH SERIES. 



Page 

 Proceedings of the Royal Society : — 



Mr. J. M. Heppel on the Theory of Continuous Beams . . 446 

 Dr. J. W. M.Rankine's Remarks on Mr. Heppel's Theory of 



Continuous Beams 457 



On Leclanche's Manganese elements, by J, Miiller 460 



On the Melting of Leaden Projectiles by their impact upon an 



Iron Plate, by Eduard Hagenbach 462 



An Experiment on the Boiling in conjunction of two Liquids 

 which do not mix, by August Kundt 463 



Index 465 



PLATES. 



I. Illustrative of M. Achille Cazin's Memoir on Internal Work in Gases. 



II. Illustrative of Professor Zollner's Paper on the Temperature and 

 Physical Constitution of the Sun. 



III. Illustrative of M. Merz's Paper on an Object-glass Spectral apparatus. 



IV. Illustrative of Mr. F. Guthrie's Paper on Approach caused by Vihration. 



