CONTENTS. 



VOL. IV. 



October 25, 188Q. 



PAGE 



Remarks by the President 2 



On the general motion of a liquid ellipsoid under the gravitation of its 



own parts. By A. G. Greenhill . 4 



On the history of geometrical continuity. By C. Taylor .. . .14 



November 8, 1880. 



On a new arrangement for sensitive flames. By Lord Rayleigh . . 17 

 On the effect of vibrations upon a suspended disc. By Lord Rayleigh . 18 

 On an apparatus illustrating the movement of sound-waves and water- 

 waves. By Sedley Taylor .. . .18 



November 22, 188Q. 



On the experiments made by Biot and others on horizontal refraction. 



By J. B. Pearson 19 



On the problem of two pulsating spheres in a fluid (Part II.). By 



W. M. Hicks 29 



*On the death straggle of a muscular fibre and the chemical and physical 



changes which accompany it. By Professor Latham . . . 35 

 *On a sun-dial of a peculiar form. By J. B. Pearson .... 36 



December 6, 1880. 



On the various notations adopted for expressing the common proposi- 

 tions of logic. By John Venn . . . .• . .36 



On the employment of geometrical diagrams for the sensible representa- 

 tion of logical propositions. By John Venn 47 



On the beds at Hendon Hill and Colwell Bay in the Isle of Wight. By 



E. Tawney and H. Keeping 59 



.UN 23 1900// 



