CONTENTS 



SECTION A.-MATIIKMATICAL, ASTRONOMICAL, AND PHYSICAL 



SCIENCE. 



lAGE 



Ball (Sir Eobekt Stawell), LL.D., F.E.S. : — 



Contributions to the Theory of Screws, 16 



€oN\vAY (Akthub W.), M.A., D.Sc. : — 



On the Motion of an Electrified Sphere, 1 



EoBERTs (Eev. W. E. Westropp), M.A. : — 



The Symbolical Expression of Eliminants, 69 



