viii 



Page 



On the Relation of the Urea to the Total Nitrogen of the Urine in Dis- 

 ease. No. I. By W. J. Russell, Ph.D., F.R.S., and Samuel West, 

 M.B. Oxon 438 



On the Amount of Nitrogen excreted in the Urine by Man at Rest. No. 

 II. By Samuel West, M.B. Oxon., and W. J. Russell, Ph.D., F.R.S 444 



On the Artificial Formation of the Diamond. By J. B. Hannay, F.R.S.E., 

 F.C.S 450 



Further Note on the Spectrum of Carbon. By J. Norman Lockyer, 

 F.R.S 461 



List of Presents 463 



No. 205.— June 3, 1880. 

 Annual Meeting for the Election of Fellows 468 



June 10, 1880. 



On a Fourth State of Matter, in a letter to the Secretary. By W. 

 Crookes, F.R.S 469 



On Bacterium fcetidum : an Organism associated with profuse Sweating 

 from the Soles of the Feet. By George Thin, M.D. (Plate 6) 473 



On the State of Fluids at their Critical Temperatures. By J. B. Hannay, 

 F.R.S.E., F.C.S 478 



On the Solubility of Solids in Gases. II. By J. B. Hannay, F.R.S.E., 

 F.C.S 484 



Note on the History of the Carbon Spectrum. By G. D. Liveing, M.A., 

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

 sonian Professor, University of Cambridge 490 



On the Spectra of the Compounds of Carbon with Hydrogen and Nitro- 

 gen. No. II. By G. D. Liveing, M.A., F.R.S., Professor of Chemistry, 

 and J. Dewar, M.A., F.R.S., Jacksonian Professor, University of Cam- 

 bridge 494 



On certain Effects of Stress on Soft Iron Wires. By J. A. Ewing, B.Sc, 

 F.R.S.E., Professor of Mechanical Engineering in the University of 

 Tokio, Japan , 510 



Memoir on Abel's Theorem (with addition by Professor Cayley). By 

 R. C. Rowe, Fellow of Trinity College, Cambridge 515 



June 17, 1880. 



Notes of Observations on Musical Beats. By Alexander J. Ellis, B.A., 

 F.R.S., F.S.A 520 



On the Lowering of the Freezing-Point of Water by Pressure. By 

 James Dewar, M.A., F.R.S., Jacksonian Professor of Natural Experi- 

 mental Philosophy in the University of Cambridge 533 



