IV. Impact with a Liquid Surface studied by the aid of Instantaneous Photography, 



By A. M. WORTHINGTON, M.A., F.R.S., and II. S. COLE, M.A. ... 175 



V. Gold- Aluminium Alloys. By C. T. HEYCOCK, F.R.S., and F. H. NEVILLE, 



F.R.S. 201 



VI. BAKERIAN LECTURE. The Specific Heats of Metals, and the Relation of 



Specific Heat to Atomic Weight. By W. A. TILDEN, D.Sc., F.R.S., Professor 

 of Chemistry in the Royal College of Science, London. With an Appendix by 

 Professor JOHN PERRY, F.R.S. 233 



VII. On the Association of Attributes in Statistics : with Illustrations from the 



Material of the Childhood Society, <&c. By G. UDNY YULE, formerly 

 Assistant Professor of Applied Mathematics, University College, London. 

 Communicated by Professor KARL PEARSON, F.R.S. 257 



VIII. The lonization of Dilute Solutions at the Freezing Point. By W. C. D. 

 WHETHAM, M.A., Fellow of Trinity College, Cambridge. Communicated (j 

 E. H. GRIFFITHS, F.R.S. 321 



IX. Combinatorial Analysis. The Foundations of a New Theory. By Major 



P. A. MACMAHON, D.Sc., F.R.S. 361 



Index to Volume 387 



