CONTENTS 

 VOL. IX. 



On the Anatomy of Tridacna. By J. D. Macdonald, Esq page 1 



Summary of a paper on the Spinal Cord as a leader for Sensibility 

 and Voluntary Movements. By E. Brown-Se'quard, M.D 1 



Summary of a paper on the resemblance between the effects of the 

 section of the Sympathetic Nerve in the Neck and of a transverse 

 section of a lateral half of the Spinal Cord. By E. Brown-Sequard, 

 M.D 1 



Experimental Researches on the Influence of Efforts of Inspiration 

 on the Movements of the Heart. By E. Brown-Se'quard, M.D. . . 1 



Summary of a paper on the Influence of Oxygen on the vital proper- 

 ties of the Spinal Chord, Nerves, and Muscles. By E. Brown- 

 Sequard, M.D 2 



Summary of a paper on the power possessed by Motor and Sensitive 

 Nerves of retaining their vital properties longer than Muscles, 

 when deprived of Blood. By E. Brown-Sequard, M.D 2 



Ocular Spectres, Structures, and Functions, Mutual Exponents. By 

 James Jago, A.B., M.B., &c 2 



On Hourly Observations of the Magnetic Declination made by Capt. 

 Maguire, R.N., and the Officers of H.M. Ship < Plover,' in 1852, 

 1853, and 1854, at Point Barrow, on the Shores of the Polar Sea. 

 By Major-General Edward Sabine, Treas. and V.P.R.S. &c 2 



On the Expansion of Wood by Heat. By J. P. Joule, LL.D., 

 F.R.S. &c 3 



On the Partitions of the r-Pyramid, being the first class or r-gonous 

 #-edra. By the Rev. T. P. Kirkman, M.A., F.R.S \. . . . 4 



Researches on the Cinchona Alkaloids. By W. Bird Herapath, M.D. 



Lond., F.R.S.E 6 



V 

 Address of the President 24 



02 



