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On an Arrangement of the Electric Arc for the Study of the Eadiation of 

 Vapours, together with Preliminary Kesults. By G. D. Liveing, M.A., 

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

 sonian Professor, University of Cambridge 119 



On the Ultra-violet Spectra of the Elements. Part I. Iron. By G. D. 

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

 F.E.S., Jacksonian Professor, University of Cambridge 122 



General Observations on the Spectrum of Carbon and its Compounds. By 

 Professor G. D. Liveing, M.A., F.E.S., and Professor James Dewar, 

 M.A., F.E.S 123 



Further Observations upon Liquid Jets, in continuation of those recorded 

 in the Eoyal Society's " Proceedings " for March and May, 1879. By- 

 Lord Eayleigh, F.E.S., Professor of Experimental Physics in the Uni- 

 versity of Cambridge , 130 



On a Collection of Eock Specimens from Socotra. By Professor T. G. 

 Bonney, M.A., F.E.S., F.G.S 145 



On the Photographic Spectrum of Comet (Wells) I, 1882. By William 

 Huggins, D.C.L., LL.D., F.E.S 148 



On the Action of Heat upon the Contagium in the two forms of Septi- 

 chaemia known respectively as " Davaine's " and " Pasteur's." By G. 

 F. Dowdeswell, M.A. (Cantab.), F.L.S., F.C.S., &c 150 



On the Development of the Enamel of the Teeth of Vertebrates. By 

 Emily Nunn. (Plates 2—4) 156 



On an Instrument for Correcting Gaseous Volume. By A. Vernon Har- 

 court, M.A., F.E.S 166 



Sun-spots and Terrestrial Phenomena. I. On the Variations of the Daily 

 Eange of Atmospheric Temperature, as recorded at the Colaba Ob- 

 servatory, Bombay. II. On the Variations of the Daily Eange of the 

 Magnetic Decimation, as recorded at the Colaba Observatory, Bombay. 

 By C. Chambers, F.E.S., Superintendent of the Colaba Observatory .... 168 



On a Method of Tracing Periodicities in a Series of Observations when the 

 Periods are unknown. By Vinayek Narayeu Nene, First Assistant at 

 the Colaba Observatory, Bombay 168 



On the Causes of Glacier- Motion. By W. E. Browne, M.A., late Fellow 

 of Trinity College, Cambridge „ 168 



The Life History of the Eingworm Fungus (Tricophyton tonsurans). By 

 M. Morris and Dr. G. C. Henderson 168 



On the Nerves of the Epiglottis. By William Stirling, M.D., Sc.D., 

 Eegius Professor of the Institutes of Medicine (Physiology) in the 

 University of Aberdeen, and G. Duffus 168 



On the Action of certain Eeagents on Coloured Blood Corpuscles. Part I. 

 Blood Corpuscles of the Frog and Newt. By William Stirling, M.D., 

 Sc.D., Eegius Professor of the Institutes of Medicine (Physiology) in 

 the University of Aberdeen 169 



List of Presents 169 



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