CONTENTS. 



PAET III. 



N°. XV. On the Oscillations of a Suspension Chain. By J. H. Ron us, M.A. 



late Fellow of Jesus College, Cambridge 379 



XVI. On the Composition and Resolution of Streams of Polarized Light from 

 different Sources. By G. G. Stokes, M.A. Fellow of Pembroke 

 College, and Lucusian Professor of Mathematics in the University 

 of Cambridge 3QQ 



XVII. On some recent Improvements in Clock-Escapements. By Edmund • 



Beckett Denison, Esq. M.A. of Trinity College, Cambridge ... 417 



Appendix. The Theory of the Long Inequality of Uranus and Neptune, depending 

 on the Near Commensurability of their Mean Motions : An Essay, 

 which obtained the Adams Prise for the Year 1850, in the University 

 of Cambridge. By R. Peirson, M.A. Fellow of St John's College. 



