PROCEEDINGS OF 

 THE UOYAL SOCIETY. 



vol. xxxix. No. 239. 



CONTENTS. "X? I $ 



PAGE 



On the Atomic Weight of Glucinum (Beryllium). Second Paper. By 

 T. S. Humpilge, Ph.D., B.Sc, Professor of Chemistry in the University 

 College of Wales, Aberystwyth 1 



On Certain Definite Integrals. No. 13. By W. H. L. Russell, A.B., F.E.S. 20 



The Vortex Eing Theory of Gases. On the Law of the Distribution of 

 Energy among the Molecules. By J. J. Thomson, M.A., F.E.S. , Fellow • 

 of Trinity College, Cavendish Professor of Experimental Physics in the 

 University of Cambridge . * . 23 



The History of the Kew Observatory. By Bobeet Henry Scott, M.A., 



E.E.S., Secretary to the Meteorological Council .... 37 



On the Microscopic Characters of some Specimens of Devitrified Glass, with. 

 Notes on certain analogous Structures in Bocks. By Douglas Heeman 

 and Feank Rutley (Plates 1-4) 87 



The Bakeeian Lecture. — On the Corona of the Sun. By William 



Huggins, D.C.L., LL.D., E.E.S. . . . . . . . ,108 



Results of the Harmonic Analysis of Tidal Observations. By A. W. Baird, 

 Major E.E., and Gr. H. Daewin, F.E.S., Fellow of Trinity College and 

 Plumian Professor in the University of Cambridge . . • . . . 135 



Obituary Notices : — 



Heney Chaeles Fleeming Jenkin . . . . . . i 



F. Gr. J. Henle . . .. . . «. iii 



Police Seven Shillings and Sixpence, 



