574 



INDEX. 



Currents, on the positive emission, 

 from hot platinum, 497. 



Cylinders, on the cooling of, in a 

 stream of air, 118; on the elec- 

 trical capacity of approximate, 



Deeley (H. M.) on the theory of the 



winds, 399. 

 Dempster (A. J.) on the ionization 

 and dissociation of hydrogen mole- 

 cules, 438. 

 Dewey (H.) on the origin of some 

 river -gorges in Cornwall and 

 Devon, 571. 

 Divergence and curl in a vector field, 



on, 628. 

 Dunlop (Miss J. G ) on the scatter- 

 ing of X-rays and atomic structure, 

 222. 

 Electrical capacity, on the, of ap- 

 proximate spheres and cylinders, 

 177. 

 properties of pure iron in rela- 

 tion to crystal size, on the, 357. 



vibration associated with a 



thin straight terminated con- 

 ductor, on the wave-length of 

 the, 96. 

 Electron theory, on magnetic rotary 

 dispersion in relation to the, 232, 

 454. 

 Electrons, on the velocities of the, 

 emitted in the normal and selec- 

 tive photo-electric effects, 100 ; 

 on free, in gases, 186 ; on the 

 determination of the work func- 

 tion when, escape from the surface 

 of a hot body, 197. 

 Evans (E. J.) on the absorption 

 spectra of the vapours of inorganic 

 salts, 55. 

 Expansion of a function, note on 



the, 490. 

 Ferguson (Dr. A.) on the variation 

 of surface-tension with tempera- 

 ture, 37. 

 Flicker photometer, on the theory of 



the, 290. 

 Flow, on two-dimentional fields of, 

 190; on the est;iblishment of tur- 

 bulent, in pipes and channels, 322. 

 Fluorescence, on light absorption 



and, 417. 

 Frequency distributions, on the 

 formula for testing the goodness 

 of fit of, 369. 



Friman (E.) on the high-frequency 

 spectra of the elements gold- 

 uranium, 403. 

 Function, note on the expansion of 



a, 490. 

 Gamma rays, on the energy of the 

 secondary beta rays produced by 

 partly absorbed, 430. 

 Garrett (Mr. C. S.) on the infra-red 

 and ultra-violet absorption of 

 sulphur dioxide, 505, 512. 

 Gases, on the relation between the 

 thermal conductivity and the 

 viscosity of, 52 ; on free electrons 

 in, 186 ; on the absorption of, in 

 vacuum-tubes, 478. 

 Geological Society, proceedings of 



the, 411,495,571. 

 Gold, on the high-frequency spectrum 



of, 403. 

 Greenhill (Sir G.), skating on thin 



ice, 1. 

 Haines (W. B.) on ionic mobilities 



in hydrogen, 339. 

 Hall effect, on the, 367. 

 Harvey (Miss E. J.) on an applica- 

 tion of nomography to a case of 

 discontinuous motion of a liquid, 

 130. 

 Hicks (Prof. W. M.) on a notation for 



Zeeman patterns, 171. 

 Hodgson (Dr. B.) on the absorption 



of gases in vacuum-tubes, 478. 

 Hot body, on the determination of 

 the work function when an elec- 

 tron escapes from the surface of a, 

 197. 

 Hughes (Prof. A. LI.) on the veloci- 

 ties of the electrons emitted in the 

 normal and selective photo-electric 

 effects, 100. 

 Hughes (J. A.) on the cooling of 



cylinders in a stream of air, 118. 

 Hvdrogen, on ionic mobilities in, 

 339. 



molecules, on the ionization 



and dissociation of, 438. 

 Inductance series, on a method for 

 deriving mutual- and self-, 276, 

 496. 

 Induc-tion, on the coefficients of 



mutual, of eccentric coils, 443. 

 Inorganic salts, on the absorption 



spectra of the vapours of, 55. 

 Ionic mobilities in hvdrogen, on. 

 339. 



