INDEX. 



535 



the heats of evaporation of different 

 liquids at their boiling-points, 38. 



Mayer's (Dr. A. M.) researches in 

 acoustics, 168. 



Meldometer, on the determination of 

 high temperatures with the, 360. 



Mercury, on the solution and diffu- 

 sion of certain metals in, 384. 



Metals, on the solution and diffusion 

 of certain, in mercury, 384 ; on the 

 diffusion of, 524. 



Metcalfe (A. T.) on the gypsum 

 deposits of Nottinghamshire and 

 Derbyshire, 147. 



Miller (Dr. Or. A.) on the substitution 

 groups whose order is four, 431. 



Mirrors, on a graphical method for 

 finding the focal lengths of, 59, 

 152, 383. 



Mizuno (Prof. T.) on the tinfoil 

 grating detector for electric waves, 

 445. 



Moore (J. E.) on a continuous and 

 alternating current magnetic-curve 

 tracer, 106. 



Morte slates, on the, 521. 



Morton (W. B.) on the electromag- 

 netic theory cf moving charges, 

 488. 



Nagaoka (H.) on the effects of 

 magnetic stress in magneto-stric- 

 tion, 454. 



Natanson (Prof. L.-) on the laws of 

 irreversible phenomena, 385. 



Nernst (Prof. W.) on the freezing- 

 points of dilate solutions, 196. 



Oxygen in the sun, on, 450. 



Oxy hydrogen, on the duration of the 

 flash of exploding, 120. 



Petavel (J. E.) on the alternating- 

 current arc, 315. 



Photography, on triangulation by 

 means of the cathode, 463. 



Platinum thermometer, on a direct- 

 reading, 62. 



Polarized light, on the electro-optical 

 investigation of, 218. 



Probability-curve, on the asym- 

 metrical, 90. 



Radial cursor, description of the, 

 52. 



Rain, on tropical, 148. 



Ramsay (Prof. W.) on a method of 

 comparing directly the heats of 

 evaporation of different liquids at" 

 their boiling-points, 38 ; on the 

 determination of high temperatures 

 with the meldometer, 3G0. 



Reeves (J. H.) on an addition to the 

 Wheatstone bridge for the deter- 

 mination of low resistances, 414. 



Resistances, on an addition to the 

 Wheatstone bridge for the deter- 

 mination of low, 414. 



Resultant tones, on, 199. 



Righi (Prof. A.) on the double 

 refraction of electrical waves, 152 ; 

 on the production of electrical 

 phenomena bv the Rontgen rays, 

 230. 



Roberts-Austen (Prof. W. C.) on the 

 diffusion of metals, 524. 



Rontgen rays, on the production of 

 electrical phenomena by the, 230 : 

 observations on the, 381 ; on the 

 electrochemical action of the, on 

 silver bromide, 462 ; on triangula- 

 tion by means of the, 463 ; on 

 the absence of, from sunlight, 

 528. 



Rowland (Prof. H. A.) on the 

 Rontgen rays, 381. 



Riicker (Prof. A. W.) on the exist- 

 ence of vertical earth-air electric 

 currents in the United Kingdom, 

 99. 



Rutley (F.) on the alteration of 

 certain basic eruptive rocks, 142. 



Schuster (Prof.) on electrified atoms, 

 151. 



Shields (Dr. J.) on a mechanical 

 device for performing the tempe- 

 rature corrections of barometers, 

 406. 



Silver bromide, on the electro- 

 chemical action of the Rontgen 

 rays on, 462. 



Slide-rule, on a new addition to the, 

 52. 



Solutions, on the freezing-points of 

 dilute, 196. 



Spectrum of argon, on the red, 149. 



Speeton series in Yorkshire and 

 Lincolnshire, on the, 519. 



Streinitz (Prof. F.) on the electro- 

 chemical action of the Rontgen 

 rays on silver bromide, 462. 



Substitution groups whose order is 

 four, on the, 431. 



Sulphur, action of the vapour of, on 

 copper, 70. 



Sun, on carbon and oxvgen in the, 

 450. 



Sunlight, on the absence of Ront- 

 gen rays from, 528. 



Temperature corrections of baro- 



