501 



Rontgen Rays, energy of (Rutherford and McClung), 245. 

 Rose (T. Kirke) See Roberts-Austen and Rose. 

 Rosenhain (W.) See Ewing and Rosenhain. 

 Rowland (S.) See Macfadyen, Morris, and Rowland. 



Rutherford (E.) and McClung (R. K.) Energy of Rontgen and Becquerel Rays, 

 and the Energy required to produce an Ion in Gases, 245. 



Scott (D. H.) Note on the Occurrence of a Seed-like Fructification in certain 



Palaeozoic Lycopods, 306. 

 Selenafes (Double) of Series R 2 M(Se0 4 ) 2) 6H2O, Cry stallo graphical Study of 



(Tutton), 58. 

 Sell (W. J.) admitted, 1. 



Silicium, Spectrum of ; lines in Stellar Spectra (Lockyer), 403. 

 Skull (Human) Study of the Correlation of (Lee and Pearson), 333. 

 Sollas (W. J.) On the Intimate Structure of Crystals. IV. Cubic Crystals with 



Octahedral Cleavage, 493. 

 Steam, Thermodynamical Properties of, Characteristic Equations, Tables of Specific 



Volume, &c. (Callendar), 266. 

 Stoney (G-. J.) Note on Inquiries as to the Escape of Gases from Atmospheres, 



286. 



Stress, Kinetic Accumulation of (Pearson), 222. 

 Sulphur, Boiling-point of; Variation with Pressure (Chree), 3. 

 Sun, Changes of Temperature of, and Variations of Rainfall (Lockyer and Lockyer), 



409 ; Preliminary Reports on Observations at Eclipse of May 28, 1900 



(Lockyer), 337; (Turner and Newall), 346; (Evershed), 370; (Copeland), 



385 ; (Christie and Dyson), 392. 

 Swan (J. W.) elected to Council, 466. 



Temperature (Underground) at Oxford in the Year 1899 (Rambaut), 218. 



Tempering of Iron Hardened by Overstrain (Muir), 461. 



Thermodynamical Properties of Gases and Vapours (Callendar), 266. 



Thermometry (Platinum), Investigations on; Sources of Change or Error in 

 (Chree), 3. 



Torsion, Theory of Impulsive, and the Kinetic Accumulation of Stress (Pearson), 

 222. 



Travers (M. W.) See Ramsay and Travers. 



Turner (H. H.) and Bewail (H. F.) Total Solar Eclipse of 1900 (May 28). Pre- 

 liminary Report on the Observations made at Bouzareah (in the grounds 

 of the Algiers Observatory), 346. 



Turnip, Bacterial Disease of (Potter), 442. 



Tutton (A. E.) A Comparative Crystallographical Study of the Double Selenates 

 of the Series R,M(SeO 4 ) 2 ,6H 2 O Salts in which M is Zinc, 58. 



Underground Temperature at Oxford in the Year 1899 (Rambaut), 218. 



Variation, Law of, as regards Reaction to Environment (Vernon), 85. 



Vernon (H. M.) Certain Laws of Variation. I. The Reaction of Dereloping 



Organisms to Environment, 85. 



Vertebrate Animals, Distribution in India, Ceylon, &c. (Blanford), 484. 

 Vice-presidents appointed, 436. 

 Viscosity of Wires, Effects of Temperature Changes on (Gray, Blyth, and Dunlop), 



180. 

 Visual Area of Cerebral Cortex, Exact Localisation of (Bolton), 216. 



