viii 



Page- 

 On the Spectrum of Carbon. By G. D. Liveing, M.A., F.R.S., Professor 

 of Chemistry, and J. Dewar, M.A., F.R.S., Jacksonian Professor, 

 University of Cambridge 403 



Preliminary Eeport to the Solar Physics Committee on a Comparison for 

 Two Years between the Diurnal Ranges of Magnetic Declination as 

 recorded at the Kew Observatory, and the Diurnal Ranges of Atmos- 

 pheric Temperature as recorded at the Observatories of Stonyhurst, 

 Kew, and Falmouth. By Balfour Stewart, LL.D., F.R.S., Professor of 

 Physics at Owens College, Manchester 410 



March 16, 1882. 



Sur les. Centres de Courbure Principaux des Surfaces Homofocales du 

 Second Ordre. By Lieut. -Colonel A. Mannheim, Professor in the 

 Ecole Poly technique 421 



Note on the Photographic Spectrum of the Great Nebula in Orion. By 

 "William Huggins, D.C.L., LL.D., F.RS 425 



On the Disappearance of some Spectral Lines and the Variations of 

 Metallic Spectra due to Mixed "Vapours. By G. D. Liveing, 

 M.A., F.R.S., Professor of Chemistry, and J. Dewar, M.A., F.E.S., 

 Jacksonian Professor, University of Cambridge 428 



March 23, 1882. 



On the Constituent of the Atmosphere that Absorbs Radiant Heat. II. 

 By S. A. Hill, Meteorological Reporter, North-West Provinces and 

 Oudh 435 



On the Influence of Coal-dust in Colliery Explosions. No. IV. By W. 

 Galloway , , ., 437 



March 30, 1882. 



On the Development of the Ossicula Auditus in the Higher Mammalia. 

 By Alexander Fraser, M.B., &c, Senior Demonstrator of Anatomy, 

 Owens College, Manchester - 446 



Description of the Fossil Tusk of an extinct Proboscidian Mammal (JVotele- 

 phas australis, Ow.), from Queensland, Australia. Bv Professor Owen, 

 C.B., F.R.S., &c " ... 448 



Action of Ethylene Chlorhydrin upon the Bases of the Pyridine Series 

 and on Quinoline. By Professor Adolph Wurtz, For. Mem. R.S 448 



On the Movement of Gas in "Vacuum Discharges.." By William Spot- 

 tiswoode, P.R.S., and J. Fletcher Moulton, F.RS 453 



List of Presents 455 



The Effects of certain Modifying Influences on the Latent Period of 

 Muscle Contraction. By Gerald F. Yeo, M.D., F.R.C.S., and Theodore 

 Cash, M.D 462 



