INDE X. 



615. 



Lodge (Sir 0.) on tether and motion, 

 315 ; obituary notice of Professor 

 G. C. Foster, 317 ; on a possible 

 means of determining" the two 

 characteristic constants of the 

 tether of space, 465. 



McLeod (A. R.) on the lags of 

 thermometers with spherical and 

 cylindrical bulbs in a medium 

 whose temperature is changing at 

 a constant rate, 134. 



Magnesium, on ionization and reso- 

 nance potentials for electrons in 

 vapour of, 33. 



Magnetic and electric fields, on a 

 reciprocal relation between, 472. 



Magneto, experiments on the high- 

 tension, 284, 372 ; on the " break " 

 of a, 481. 



Majorana (Prof. Q.) on the constancy 

 of velocity of the light emitted by 

 a moving source, 145. 



Mallik (Prof. D. N.) on Fermat's 

 law, 158. 



Mawson (Sir D.) on the Antarctic 

 ice-cap, 462. 



M^roury vapour, on the light from, 6 1 . 



Michelson interference experiment, 

 on the, 150. 



Mitra (S. K.) on Sommerfeld's treat- 

 ment of the problem of diffraction 

 by a semi-infinite screen, 50. 



Mohler (Dr. F. L.) on ionization and 

 resonance potentials for electrons 

 in vapours of magnesium and 

 thallium, 33 ; on resonance radia- 

 tion of sodium vapour excited by 

 one of the D lines, 456. 



Molecular attraction and attraction 

 of mass, on, 65. 



composition, on latent heats of 



fusion and their relation to", 495. 



scattering of radiation, on the, 



161. 



Morton (Prof. W. B.) on the motion 

 of a simple pendulum after the 

 string has become slack, 280. 



Nitrogen, on the collision of alpha 

 particles with atoms of, 571, 581. 



Operational methods in mathema- 

 tical physics, examples of, 407. 



Optical character of some brilliant 

 animal colours, on the, 98. 



Owen (S. P.) on the influence of 

 temperature on homogeneous gas 

 reactions, 224. 



Oxygen, on the collision of alpha 



particles with atoms of, 571. 

 Paterson (C. 0.) on the measurement 

 of the peak potential of an alter- 

 nating source, 301. 



Peak potential, on the measurement 

 of, 301. 



Pendulum, on the motion of a simple,, 

 after the string has become slack, 

 280. 



Physics, on operational methods in 

 mathematical, 407. 



Piaggio (Prof. H. T. H.) on the 

 numerical integration of differ- 

 ential equations, 596. 



Planck's law, on the origin of spectra 

 and, 419. 



Radiation, on molecular scattering of, 

 161 ; on scattered, from a plate 

 exposed to a beam of X-rays, 207. 



Random vibrations and random 

 flights, on the problem of, 321, 498. 



Rajleigh (Lord) on the optical 

 character of some brilliant animal 

 colours, 98; on the problem of 

 random vibrations, and of random- 

 flights in one, two, or three 

 dimensions, 321; on the resultant 

 of a number of unit vibrations 

 whose phases are at random, 498. 



Relativity, on general, 219. 



Resonance radiation of sodium 

 vapour, on the, 456. 



Resonators, on mechanical, under 

 double forcing, 453. 



Rotational oscillation of a cylinder 

 in a viscous liquid, on the, 587. 



Rutherford (Sir E.) on the collision 

 of alpha particles with light atoms, 

 537, 562, 571, 581. 



Saha (M. N.) on the fundamental 

 law of electrical action, 347. 



Shaft, on the lateral vibration of a 

 loaded, 304 ; on the whirling of an 

 excentrically-loadedoverhung',515. 



Siegbahn (M.) on precision-measure- 

 ments in the X-ray spectra, 601. 



Silberstein (Dr. L.) on boundary 

 difficulties of Einstein's gravitation 

 theory, 230 ; on the dispersion of 

 diamond, 396. 



Sodium vapour, on the resonance 

 radiation of, 456. 



Sommerfeld's treatment of the 

 problem of diffraction by a semi- 

 infinite screen, on, 50. 



