INDEX. 



1043 



Shakespear (Dr. G. A.) on some modi- 

 fications in an ordinary balance, 

 990. 



Shorter (S. A.) on a classification of 

 foaming solutions, 718 ; on the 

 thermodynamical theory of ternary 

 mixtures, 942. 



Siegbahn (Dr. M.) on the use of 

 the telephone as an oscillograph, 

 909. 



Simeon (F.) on the viscosity of cal- 

 cium chloride solutions, 95. 



Smith (H.) on the spectroscopy of 

 the electric brush discharge in 

 weak acids and solutions, 801. 



Smith (S.) on initial stages of ioni- 

 zation by collision, 963. 



Soddy (F.) on the existence of 

 uranium Y, 215. 



Sodium, on the separate excitation 

 of the centres of emission of the 

 D lines of, 1018. 



flame, on the production of a 



very intense, 530. 



vapour, photometric investi- 

 gation of the superficial resonance 

 of, 1025. 



Solutions, on the relationship be- 

 tween the viscosity, density, and 

 temperature of salt, 288 ; on a 

 classification of foaming, 718 ; on 

 the electric brush discharge in, 

 801. 



Speas (W. P.) on a photometric 

 study of the fluorescence of iodine 

 vapour, 531. 



Spectra, on crossed, obtained by 

 combinations of different inter- 

 ferometers, 126; on the distri- 

 bution of energy in the, of gases, 

 475 ; on the high-frequency, of 

 the elements, 541, 703. 



Spectroscopy of the electric brush 

 discharge in weak acids and solu- 

 tions, on the, 801. 



Spectrum lines, on the effect of 

 electric and magnetic fields on, 

 506 ; on the separation of close, 

 for monochromatic illumination, 

 524. 



Steels, on the magnetic properties of 

 chrome, 830. 



Struts, on the application of graphi- 

 cal methods to the solution of 

 problems on, 203. 



Sublimation, on the temperature of, 



Sulphur, on the temperature of sub- 

 limation of compounds of, 6. 



Swann (Dr. W. F. G.) on the ex- 

 pression for the electrical conduc- 

 tivity of metals as deduced from 

 the electron theory, 441. 



Takamine (T.) on crossed spectra 

 obtained by combinations of dif- 

 ferent interferometers, 126 ; on an 

 anomalous Zeeman effect in satel- 

 lites of mercury lines, 333. 



Telephone, on the use of the, as an 

 oscillograph, 909. 



Tellurium, on the temperature of 

 sublimation of compounds of, 8. 



Thermal conductivity of granite and 

 basalt, on the, 58. 



Thermodynamics of radiation, on the, 

 870 ; of ternary mixtures, on the, 

 942. 



Thomson (Sir J. J.) on the forces 

 between atoms and chemical affi- 

 nity, 757. 



Thorium B, on the diffusion of, 587. 



emanation, on the periods of 



transformation of, 720. 



Three bodies, on the action of a dis- 

 turbing force in the restricted 

 problem of, 147. 



Tie-rods, on the application of graph- 

 ical methods to the solution of 

 problems on, 203. 



Townsend (Prof. J. S.) on the energy 

 required to ionize a molecule by 

 collision, 269; on the discharge 

 of electricity from cylinders and 

 points, 786. 



Trechmann (C. T.) on the lithology 

 and composition of Durham mag- 

 nesian limestones, 1036. 



Tyndall (Dr. A. M.) on cathode 

 disintegration in a vacum-tube, 

 415. 



Unstriated discharge, on ionization 

 in the, 277. 



Uranium products, on the gamma 

 rays from the, 252. 



Y, on the existence of, 215. 



Vacuum-tubes, on heating eft'ects at 

 the anode in, 189; on cathode 

 disintegration in, 415. 



Viscosity, density, and temperature 

 of salt solutions, on a relationship 

 between the, 288. 



Waetzmann (Prof. E.) on range and 

 sharpness of resonance under sus- 

 tained forcing, 467. 



