xxiv 



INDEX. 



Stream lines, the theory of free (Michell) , 

 129. 



Stress, the rupture of steel by longi- 

 tudinal (Cams- Wilson), 363. 



Stress and strain, the influence of, on 

 the physical properties of matter. 

 Part III. Magnetic induction {con- 

 tinued) (Tomlinson), 13. 



Symmetrical functions of the roots of 

 systems of equations, memoir on the 

 (MacMahon), 176. 



Temperature of the British Isles, 1869- 

 1883, inclusive, the variability of the 

 (Scott), 303. 



Tension, on the effect of, upon mag- 

 netic changes of length in wires of 

 ii'on, nickel, and cobalt (Bid well), 

 469. 



: of recently formed liquid surfaces, 



on tbe (Rayleigh) , 281. 



Thomas (O.) a milk dentition in Orycter- 

 opus, 126, 246. 



Thomson (J. J.) and G-. F. C. Searle, a 

 determination of " »," the ratio of 

 the electromagnetic unit of electricity 

 to the electrostatic unit, 376. 



Thorpe (T. E.) and A. W. Rucker, pre- 

 liminary note on supplementary mag- 

 netic surveys of special districts in the 

 British Tsles, 443. 



Tomlinson (H.) the influence of stress 

 and strain on the physical properties 

 of matter. Part III. Magnetic induc- 

 tion {continued). The internal fric- 

 tion of iron, nickel, and cobalt, studied 

 by means of magnetic cycles of very 

 minute range, 13. 



Torpedo, the cranial nerves of the. Pre- 

 liminary note (Ewarf), 290. 



Training walls, investigations into the 

 effects of, in an estuary like the Mer- 

 sey ( Vernon- Harcourt), 142. 



Tunguragua, in the Andes of Ecuador, 

 January 11th, 1886, on a second case 

 of the occurrence of silver in volcanic 

 dust, namely, in that thrown out in the 

 eruption of (Mallet), 277. 



Unit of length of a standard scale by 

 Sir G-eorge Shuckburgh, appertaining 

 to the Roval Society, on the (Walker), 

 186. 



" V," a determination of, the ratio of 

 the electromagnetic unit of electricity 

 to the electrostatic unit (Thomson 

 and Searle), 376. 



Variability in stars, on a photographic 

 method for determining (Roberts), 

 137. 



Variations occurring in certain decapod 

 Crustacea. L C rang on vulgaris 

 (Weldon), 445. 



Vernon- Harcourt (L. F.) investigations 

 into the effects of training walls in 

 an estuary like the Mersey, 142. 



Vice-Presidents, appointment of, 1. 



Volcanic dust, on a second case of the 

 occurrence of silver in, namely, in 

 that thrown out in the eruption of 

 Tunguragua, in the Andes of Ecuador, 

 January 11th, 1886 (Mallet), 277. 



Walker (J. T.) on the unit of length of 

 a standard scale by Sir G-eorge Shuck- 

 burgh, appertaining to the Royal 

 Society, 186. 



Ward (H. M.) the relations between 

 host and parasite in certain epidemic 

 diseases of plants, — Croonian lecture, 

 213, 393. 



Ward's (A. W.) paper on the magnetic 

 rotation of the plane of polarisation 

 of light in doubly refracting bodies, 

 remarks on (Wiener and Wedding), 1. 



Wedding (W.) and O. Wiener, remarks 

 on Mr. A. W. Ward's paper ' on the 

 magnetic rotation of the plane of 

 polarisation of light in doubly refract- 

 ing bodies,' 1. 

 I Wedge photometer, a compound (Spitta) , 

 15. 



Weldon (W. F. R.) the variations 

 occurring in certain decapod Crustacea. 

 I. Crangon vulgaris, 445. 



Wheatstone bridge, on a pneumatic 

 analogue of the (Shaw), 462. 



Wiener (O.) and W. Wedding, re- 

 marks on Mr. A. W. Ward's paper 

 ' on the magnetic rotation of the plane 

 of polarisation of light in doubly 

 refracting bodies,' 1. 



Williamson (W. C.) on the organisation 

 of the fossil plants of the coal- 

 measures. Part XVII, 294. 



Wilson (C. A. C). See Cams- Wilson. 



END OF FORTY- SEVENTH VOLUME. 



HARBISON AND SONS, PEINTEES IN ORDINARY TO HER MAJESTY, ST. MARTIN' S LANE. 



