INDEX. 



551 



Liquid diffusion, on, 1. 



surfaces of revolution, on the 



critical mean curvature of, 35. 



, on the transition from the, to 



the gaseous state of matter, 435, 547. 



Liquids, on the nature of, 129. 



MacMahon (Capt. P. A.) on the dif- 

 ferential equation of the general 

 substitution, 542. 



Magnetic field, on the strength of the 

 terrestrial, in buildings, 381 ; on 

 the variations in the electrical re- 

 sistance of antimonv and cobalt in 

 a, 540. 



moments, on the effect of per- 

 cussion on, 293. 



Magnetism, notes on, 225. 



Magnets, on the effects of percussion 

 on the magnetic moments of steel, 

 293, 420. 



Matter, on the gaseous and liquid 

 states of, 435, 547. 



Measuring-instruments used in me- 

 chanical testing, 282. 



Meldola (Prof. R.) on the constitu- 

 tion of the diazoamido-compounds, 

 513. 



Mever (Prof. L.) on the doctrine of 

 afhmty, 504. 



Mills (Dr. E. J.) on the action of 

 heat on potassic chlorate and per- 

 chlorate, 375. 



Motion, on the laws of, 473. 



Muirhead (R. F.) on the laws of 

 motion, 473. 



Nicol (Dr. W. W. J.) on the expan- 

 sion of salt-solutions, 385. 



Nitrogen tetroxide, on the specific 

 heat of the vapour of, 223. 



Oar, on the order of lever to which 

 the, belongs, 58, 222. 



Oberniayer (A. von) on the action of 

 the discharge of electricity of high 

 potential on solid particles sus- 

 pended in the air, 301. 



Ostwald (Prof. W.) on the chemical 

 combination of gases, 379, 472. 



Pendulum, on a nearly perfect simple, 

 72. 



Percussion, on the effects of, in 

 changing the magnetic moments 

 of steel magnets, 293. 



Permeability, on electric, 339. 



Pichler (M. von) on the action of the 

 discharge of electricity of high po- 

 tential on solid particles suspended 

 in the air, 301. 



Pickering (Prof. S. U.) on the con- 

 stitution of carbon compounds, 109; 

 on delicate thermometers, 401 ; on 

 the effect of pressure on thermo- 

 meter-bulbs and on some sources 

 of error in thermometers, 406. 



Polarization, on the galvanic, of alu- 

 minium, 304. 



Potassic chlorate and perchlorate, on 

 the action of heat on, 375. 



Quartz fibres, on the finest, 493. 



Ramsay (Dr. W.) on the influence of 

 change of condition from the liquid 

 to the solid state on vapour-pres- 

 sure, 61 ; on the nature of liquids, 

 129 ; on evaporation and dissocia- 

 tion, 435 ; on the gaseous and 

 liquid states of matter, 547. 



Rayleigh (Lord) on electricity and 

 magnetism, 225. 



Roberts (T.) on the correlation of the 

 Upper Jurassic rocks of the Jura 

 with those of England, 466. 



Rowland (Prof. H. A.) on the rela- 

 tive wave-lengths of the lines of 

 the solar spectrum, 257 ; on a 

 simple and convenient form of 

 water-battery, 303. 



Riicker (A. W.) on the critical mean 

 curvature of liquid surfaces of re- 

 volution, 35. 



Rutley (F.) on the metamorphic 

 rocks of the Malvern Hills, 70. 



Salt-solutions, on the expansion of, 

 385. 



Seismograph, on an improved form 

 of, 353. 



Shadows, on peculiar sunrise-, 29. 



Shaw ( W. N.) on the atomic weights 

 of silver and copper, 138. 



Silk fibre, on the rigidity of, 46. 



Silver, on the atomic weight of, 

 138. 



Smoke, apparatus for the condensa- 

 tion of, by statical electricity, 471. 



Solar spectrum, on the relative' wave- 

 lengths of the lines of the, 257. 



Sound, on the velocity of, in iron, 250; 

 on the conductivity of, 548. 



Spectrum, on the relative wave- 

 lengths of the lines of the solar, 

 257. 



Steel, on the behaviour of, under 

 feeble magnetic forces, 225. 



Stoney (Dr. G. J.) on some curious 

 consequences of a well-known dy- 

 namical theorem, 544. 



