184 Meetings held during the Session 1898 — 1899. 



The President elect, Mr J. Larmor, then took the Chair. 

 The following Communications were made : 



1. On the Evaluation of a certain Determinant which occurs in the 

 mathematical theory of statistics and in that of elliptic geometry of 

 any number of dimensions. By Arthur Berry, M.A., King's College. 



2. (1) Metrical Relations between Linear Complexes. (2) Apolar 

 Systems of Quadrics. By J. H. Grace, B.A., Peterhouse. 



3. Certain Systems of Quadratic Complex Numbers. By A. E. 

 Western, B.A., Trinity College. 



4. On Mittag-Leffler's Theorem. By H. F. Baker, M.A., St 

 John's College. 



5. On the connection between the Chemical Composition of a Gas 

 and the Ionization produced in it by Rontgen Rays. By Professor 

 J. J. Thomson, Trinity College. 



6. On Convection Currents and on the Fall of Potential at the 

 Electrodes, in Conduction produced by Rontgen Rays. By John 

 Zeleny, B.Sc. 



7. On Velocity of Solidification. By Harold A. Wilson, B.Sc. 



November 14th, 1898. 

 Mr J. Larmor, President, in the Chair. 

 The following Communications were made : 



1. Orthogenetic Variation in the Shells of Chelonia. By Mr 

 H. Gadow, F.R.S. 



2. Some points in the Morphology of the Enteropneusta. By 

 Dr A. Willey. 



3. On Lepidodendron from the Calciferous Sandstone of Scotland. 

 By Mr A. C. Seward, and A. W. Hill, B.A., King's College. 



November 28th, 1898. 

 In the Chemical Laboratory. 



Mr J. Larmor, President, in the Chair. 



The following were elected Fellows of the Society : 



W. Welsh, M.A., Jesus College. 



W. M C F. Orr, M.A., St John's College. 



G. T. Walker, M.A., Trinity College. 



J. Graham Kerr, B.A., Christ's College. 



J. H. Grace, B.A., Peterhouse. 



E. W. Barnes, B.A., Trinity College. 



