VOL. IXYl. 



PROCEEDINGS OF 

 THE ROYAL SOCIETY. 



No. 426. 



CONTENTS. 



PAGE 



Meeting of January 25, 1900, and List of Papera read 94 



On the Mechanism of Gelation in Reversible Colloidal Systems. By "W. B. 

 Habdt, Fellow of Gonrille and Caius College, Cambridge. Communi- 

 cated by F. H. Neville, F.E.S 95 



A Preliminary Investigation of the Conditions which determine the Stability 

 of Irreversible Hydrosols. By W. B, IIaedt, Fellow of Gonville and 

 Caius CoUege, Cambridge. Communicated by F. H. Neville, F.R.S. . 110 



The Piscian Stars. By Sir Norman Locktee, X.C.B., F.R.S. . . .126 



Mathematical Contributions to the Theory of Evolution. — On the Law of 



Reversion. By Kael Pearson, F.R.S., University College, London . 140 



Price Two Shillings and Sij;pcnce, 



March 22, 1900. 



