[ 544 ] 



INDEX to VOL. XXVI, 



Absorption, on selective, of 



metals for ultra-violet light, 316 ; 

 on a simple pendulum experiment 

 to explain, 396. 



^Ether, on the application of Sir W. 

 Thomson's theory of a contractile, 

 to double refraction, dispersion, 

 metallic reflexion, and other op- 

 tical problems, 521. 



Air, on the coefficient of expansion 

 of, 393 ; on the compressibility of, 

 up to 3000 atmospheres, 541. 



Air-thermometer, on a constant- 

 volume, 149. 



Amagat (E. H.) on the compres- 

 sibility of oxygen, hydrogen, ni- 

 trogen, and air up to 3000 atmo- 

 spheres, 541. 



11 Amphisbsena," on the new baro- 

 meter, 458. 



Attwood (G.) on some of the aurife- 

 rous tracts of Mysore Province, 236. 



Ayrton (Prof. W. E.) on the govern- 

 ing of electromotors, 63. 



Azo-naphthol compounds, on evidence 

 of the quantivalence of oxygen 

 derived from a study of the, 403. 



Balance, on a hydrostatic, 266. 



Barometer, on a new, 458. 



Barus (O.) on Maxwell's theory of 

 the viscosity of solids, 183 ; on the 

 secular annealing of cold hard 

 steel, 397. 



Bell (L.) on the action of a magnet 

 on chemical action, 105. 



Benecke prize in philosophy for 1891, 

 the, 80. 



Benzene, on the constitution of, 429. 



Bernoulli's formula for the lifting- 

 power of magnets, on, 70. 



Birefringent action of strained glass, 

 on the, 321. 



Blakesley (T. H.) on magnetic lag, 

 34 : on a new barometer, 458. 



Boitel (M.) on the secondary arcs 

 which accompany the rainbow, 

 239. 



Books, new : — Watts's Dictionary of 

 Chemistry, Vol. I., 73; Steven- 

 son's Treatise on Alcohol, 76; 

 Muir and Slater's Elementary 

 Chemistry, 230; Muir and Car- 

 negie's Practical Chemistry, ib.; 

 Dittmar's Exercises in Quantita- 

 tive Chemical Analysis, 231 ; Bas- 

 set's Treatise on Hydrodynamics, 

 306 ; Malet's Sunlight, 307 ; Mil- 

 ner's Companion to the Weekly 

 Problem-papers, 308 ; Casey's Trea- 

 tise on Plane Trigonometry, 309 ; 

 Prestwich's Geology, 389; Amo- 

 retti and Morales' Teoria elemental 

 de las Determinantes, 461 ; Peck's 

 Elementary Treatise on Determi- 

 nants, 463 ; Annual Report of the 

 Geological and Natural-History 

 Survey of Canada, Vol. II., 464. 



Borgmann (Prof. J.) on the influence 

 of light upon electric discharge, 

 272. 



Bottomley (J. T.) on a constant- 

 volume air-thermometer, 149. 



Brewster's neutral point, on, 542. 



Brown (J.) on figures produced by 

 electric action on photographic dry 

 plates, 502. 



Burbank (J. C. B.) on photography 

 of the infra-red of the solar spec- 

 trum, 391. 



Burton (C. V.) on electromotive 

 forces of contact, 43. 



Cailletet (M.) on freezing mixtures 

 made with solid carbonic acid, 394. 



Capillarity, researches on, 162. 



Carbonic acid, on freezing mixtures 

 made with solid, 394. 



Chemical action, on the action of a 

 magnet on, 105. 



