INDEX. 



5G1 



Physiological changes induced in the hu- 

 man economy by change of climate, 513. 



Pneumogastric nerves, elucidation of the 

 functions of, 340. 



Poncelet (J. V.), obituary notice of, i. 



* Porcupine ' dredging-expedition, 98, 99 ; 

 notice of, 106 ; report, 397. 



Porrett (R.), obituary notice of, iv. 



Presents (List of), 94, 99, 116, 120, 130, 

 144, 165, 171, 251, 335, 393. 



Pressure on the nerves, effects of, 342. 



Proctor (R. A.), preliminary paper on cer- 

 tain drifting motions of the stars, 169. 



Propane, on the derivatives of, 29. 



Pulse, the, influence of tropical climate 

 on, 525. 



Pyrosulphuric chloride, on the properties 

 and several reactions of, 511. 



Quantics, ninth memoir on, 343. 



Radiation, mathematical application to 



the theory of, 553. 

 Rankine (W. J. M.) on the mathematical 



theory of stream-lines, especially those 



with four foci and upwards, 207. 

 , on the thermodynamic theory of 



■waves of finite longitudinal disturbance, 



80, 122. 



, remarks on Mr. Heppell's theory of 



continuous beams, 178. 



Ransom (W. H.) admitted, 493. 



Rattray (A.) on some of the more im- 

 portant physiological changes induced 

 in the human economy by change of 

 climate, as from temperate to tropical, 

 and the reverse, 513. 



Refraction-equivalents of the elements, on 

 the, 49. 



Regnault (H. V.), Copley medal awarded 



to, 107 ; his researches, 108. 

 Respiration, influence of tropical climate 



on the, 514. 

 Reynolds, spectrum experiments, 505. 

 Rhizopodal fauna of the deep sea, on, 59. 

 Roget (P. M.), obituary notice of, xxviii. 

 Roscoe (H. E.), researches on vanadium : 



Part II., 37 ; Part III., preliminary 



notice, 316. 

 Rosse (Earl of), note on the construction 



of thermopiles, 553. 

 Royal Medal awarded to Sir T. Maclear, 



109 ; to A. Matthiessen, 111. 

 Royston-Pigott (G. W.) on an aplanatic 



searcher, and its effects in improving 



high-power definition in the microscope, 



327. 



Russell (W. H. L.) on linear differential 



equations, 118. 

 on linear differential equations (No. 



II.), 210. 



on the mechanical description of 



curves, 72. 



Sabine (Gen. Sir E.), results of the first 

 year's performance of the photographi- 

 cally self-recording meteorological in- 

 struments at the Central Observatory 

 of the British system of Meteorological 

 Observations, 3. 



, contributions to terrestrial magnet- 

 ism : No. XII. The magnetic survey of 

 the British Islands, reduced to the epoch 

 of 1842-5, 532. 



Saline solutions, on supersaturated, 533. 



Sea-water, observations on samples of, 

 481 ; analyses of, 488. 



Schorlemmer (C.) on the derivatives of 

 propane, 29. 



, researches on the hydrocarbons of 



the series C n H 2n + 2 . — No. V. On octyl 

 compounds, 25. 



Scotch granites compared with those of 

 Donegal, 313. 



Scott (R. H.) admitted, 493. 



on the connexion between oppo- 

 sitely disposed currents of air and the 

 weather subsequently experienced in the 

 British Islands, 12. 



Shanks (W.), fourth and concluding sup- 

 plementary paper on the calculation of 

 the numerical value of Euler's con- 

 stant, 49. 



Shells, observations on the mode of growth 

 of turbinated and discoid, 529. 



Shoulder, on a group of varieties of the 

 muscles of the, 1. 



Silver, on fluoride of, 157. 



Skull, human, an inquiry into the varia- 

 tions of the, 35. 



Smyth (C.) on supra-annual cycles of 

 temperature in the earth's surface-crust, 

 311. 



Sodium, on the successive action of, on 

 acetic ether, 91,228. 



Solar prominences, spectroscopic observa- 

 tions of the, 62, 119, 355. 



Sorby (H. C.) on some remarkable spectra 

 of compounds of zirconia and the oxides 

 of uranium, 197. 



Spectra, gaseous, researches on (Note III.), 

 79. 



Spectra, remarkable, of compounds of zir- 

 conia and the oxides of uranium, 197. 



Spectroscopic observations of solar eclipse, 

 181. 



Spectroscopic observations of solar pro- 

 minences, 62, 119, 355. 



Spectroscopic observations of the nebula 

 in Orion and of Jupiter, 242 ; of Argo, 

 245. 



Speculum, effects of varnish on a, 219. 

 Sphygmograph, on the relative duration of 



the component parts of the radial trace 



in health, 351. 

 tracings showing effect of alcohol on 



the pulse, 370. 



