IX 



Page 



Note upon a Self-registering Thermometer adapted to Deep-sea Soundings. 

 By W. A. Miller, M.D., Treas. and V.P.R.S 482 



Magnetic Survey of the West of France. By the Rev. Stephen J. Perry, 

 FJLA.S.,F.M.S :. 486 



An Account of Experiments made at the Kew Observatory for determin- 

 ing the True Vacuum- and Temperature-Corrections to Pendulum Ob- 

 servations. Bv Balfour Stewart, Esq., F.R.S., and Benjamin Loewv, Esq., 

 F.R.A.S. : " 488 



Additional Observations on Hydrogenium. Bv Thomas Graham, F.R.S., 

 Master of the Mint 500 



Spectroscopic Observations of the Sun (continued). By Lieut. J. Ilerschel, 

 in a Letter addressed to W. Huggins, F.R.S 506 



On Jargonium, a new Elementary Substance associated with Zirconium. 

 By H. C. Sorby, F.R.S 511 



Solar Radiation. By J. Park Harrison, M.A 515 



Obituary Notices of Deceased Fellows : 



Michael Faraday i 



Sir David Brewster lxix 



Charles Giles Bridle Daubeny lxxiv 



Julius Pliicker . lxxxi 



Jean Bernard Leon Foucault lxxxii 



Antoine Francis Jean Claudet lxxxv 



Charles James Beverly lxxxvii 



