622 



I N D E X. 



•Iron, on the effects of temperature 

 on the magnetic properties of, 1 ; 

 on the effects of twist on the 

 thermo-electric qualities of, 223 ; 

 on the arc spectrum of, 503. 

 Kelvin (Lord) on the motion pro- 

 duced in an infinite elastic solid 

 bj the motion through the space 

 occupied by it of a body acting on 

 it only by attraction or repulsion, 

 181; on the duties of ether for 

 electricity and magnetism, 305. 

 Kynaston (H.) on a new type of 



ruck from Kentallen, 444. 

 Larmor (Dr. J.) on the theory of 



electrons, 277. 

 Liquids, on the velocity of solidifica- 

 tion and viscosity of supercooled, 

 233 : on the loss of charge of 

 electrified, by evaporation, 489. 

 Lomas (J.) on the inorganic con- 

 stituents of the crag of Essex, 

 356. 

 Lownds (L.) on the reflexion and 

 transmission by condensers of 

 electric waves along wires, 357. 

 MacUregor (Prof. J. G.) on a dia- 

 gram of freezing-point depressions 

 for electrolytes, 505. 

 Magnesium, on .the arc spectrum of, 



500. 

 Magnetic properties of iron, on the 



effects of temperature on the, 1. 

 Magnetism, on the duties of aather 



for, 305. 

 Martini (Prof. T.) on the heat 

 developed in wetting powders, 

 618. 

 Materials, on the strength of ductile, 



under combined stress, 69. 

 Mayer's hypothesis, on the methods 



of testing, 259. 

 Metals, on the arc spectra of some, 

 as influenced by an atmosphere of 

 hydrogen, 497. 

 Micrometer, on an electric. 537. 

 Microscope, on the illumination of 

 objects under the, 347. 

 i Minerals containing rare elements, 

 on the discovery and occurrence 

 . of, 268. 



( Mizuno (T.) on the action of the 

 coherer, 445. 

 3Iolecular constitution of water, on 

 . the, 460. 



More (Dr. L. T.) on the supposed 

 elongation of a dielectric in an 

 electrostatic field, 198. 

 Morton (Prof. W. B.) on the propa- 

 gation of electric oscillations along 

 parallel wires, 605. 

 Nagaoka (Prof. H.) on the elastic 

 constants of rocks and the velocity 

 of seismic waves, 53. 

 Nitric acid, on the action of copper- 

 zinc alloys on, 231. 

 Nitrogen thermometer, corrections to 



the, 433. 

 Nordenskibld (Baron A. E.) on the 

 discovery and occurrence of 

 minerals containing rare elements, 

 268. 



Orr (Prof. W. McF.) on the theory 

 of electrons, 269. 



Oscillations, on the propagation 

 of electric, along parallel wires, 

 605. 



Oxygen, on the history of free, 312, 

 399 ; on the presence of, in the 

 sun, 343. 



Parkinson (J.) on the rocks of Jersey, 

 179, 180. 



Pearson (Prof. K.) on the criterion 

 that a given system of deviations 

 from the probable in a correlated 

 system of variables is such that it 

 ■can be supposed ito have arisen 

 from random sampling, 157. 



Pendulum, remarks on a gravita- 

 tional. 595. 



Platinum thermometers, on the com- 

 parison of, 421 . 



Pouillet's phenomenon, on, 618. 



Powders, on the heat developed in 

 wetting, 613. 



Pressure-gauge, on a new type of, 

 86. 



Probability, on a criterion of, 157. 



Rayleigh (Lord) on approximately 

 simple waves, 135 ; on a theorem 

 analogous to the virial theorem, 

 210. 



Reed (F. R. C.Von the igneous rocks 

 of the coast of Waterford, 443. 



Resistances, on the measurement of 

 scone standard, 410. 



Rocks, on the elastic constants of, 

 53. 



Rose-Innes (J.) on the constant- 

 volume gas-thermometer, 251, 



