INDEX. 



515 



cal characters of (King and Rowney), 

 214. 



Ord (W. M.), an account of experi- 

 ments on the influence of colloids 

 upon crystalline form, and on move- 

 ments observed in mixtures of col- 

 loids with crystalloids, 238. 



Organic substances, researches on the 

 action of, on the ultra-violet rays of 

 the spectrum. III. Essential oils 

 (Hartley and Huntington), 290. 



Oxahc acid and the oxalates of the alka- 

 lies, and potassium iodide, note upon 

 the behaviour of, in sunlight (Downes 

 and Blunt), 219. 



Pancreas, note on the existence of a 

 milk-curdliDg ferment in the (Ro- 

 berts), 157. 



Parallel roads of Lochaber origin of 

 (Prestwich), 6. 



Payy (F. W.), supplementary note on 

 the volumetric estimation of sugar by 

 an ammoniated cupric test giving re- 

 duction without precipitation, 272. 



Pepsin-forming glands, on the changes 

 in, during secretion (Langley and 

 Sewall), 383. 



Period of solar spot frequency, relation 

 between the diurnal range of magnetic 

 declination and horizontal force (1841 

 to 1877), and the (Ellis), 43. 



Perry (J.) and W. E. Ayrton, on the 

 practical solution of the most general 

 problems in continuous beams, 493. 



Phyto-palaeontological investigations on 

 the fossil flora of Sheppey, report on 

 (Ettinghausen), 388. 



Potassium and sodium, vapour densities 

 of (Dewar and Scott), 206. 



, further experiments on 



vapour densities of (Dewar and 

 Scott), 490. 



iodide, note xipon the behaviour of, 



in sunlight (Downes and Blunt), 219. 



Potentials of the ellipsoid and of the 

 ellipse, expansion in series of 

 (Niven), 2. 



Presents, lists of, 141, 274, 465, 506. 



President's Address, 407. 



Prestwich (J.), on the origin of the 

 parallel roads of Lochaber, and their 

 bearing on other phenomena of the 

 glacial period, 6. 



Primes of the form 4m, + land of the 

 form 4n + 3, separate enumerations of 

 (G-laisher), 192. 



Pulse, note on the invention of a method 

 for making the movements of, audible 

 by the telephone (Richardson), 70. 



Quantitative spectroscopic experiments 

 (Liveing and Dewar), 482. 



Radial tracing, effects of chloroform and 

 ether on the (Jones), 197. 



Ratio of lateral contraction to longi- 

 tudinal extension in a body under 

 strain, measurement of (Mallock), 

 157. 



Rayleigh (Lord) on the capillary phe- 

 nomena of jets, 71. 



Respiration at various altitudes on the 

 Island and Peak of Teneriffe, note on 

 the paper read April 24 (Marcet), 

 226. 



Reversal of the lines of metallic vapours : 

 No. VII (Liveing and Dewar), 402. 



Richardson (B. W.), note- on the inven- 

 tion of a method for making the 

 movements of the pulse audible by 

 the telephone : the sphygmophone, 

 70. 



, some researches with Pro- 

 fessor Hughes' new instrument for the 

 measurement of hearing : the audio- 

 meter, 65. 



Roberts (E.), preliminary note on a new 

 tide-predicter, 198. 



(W.), note on the existence of a 



milk-codling ferment in the pancreas, 

 157. 



Romanes (Gr. J.), elected, 150 ; admitted, 

 150. 



Rosse (Earl of) on some recent improve- 

 ments made in the mountings of the 

 telescopes at Birr Castle, 157. 



Rowney (T. H.) and W. King on the 

 origin of the mineral, structural, and 

 chemical characters of ophites and 

 related rocks, 214. 



Royston-Pigott (Gr. W.), microscopical 

 researches in high power definition, 

 164. 



Russell (W. H. L.) on certain definite 

 integrals : No. V, 361. 



Schorlemmer (C.) on the normal paraffins: 



Part III, 364. 

 Schuster (A.), elected, 150; admitted, 



150. 



Scott (A.) and J. Dewar on the vapour 

 densities of potassium and sodium, 

 206. 



further experiments, 490. 



Secular effects of tidal friction, deter- 

 mination of, by a graphical method 

 (Darwin), 168. 



Seeley (H. Gr.), elected, 150 ; admitted, 

 150. 



Sensitive state of electrical discharges 



through rarefied gases (Spottiswoode 



and Moulton), 21. 

 Separate enumerations of primes of the 



form 4n + 1, and of the form 4n + 3 



(G-laisher), 192. 



