878 



INDEX. 



Osier (A. F.) on the normal forms of 



clouds, 530. 

 Oxygen gas in a pure state, W. A. Slien- 



stone and J. T. Cundall on the ]pre- 



paration and storage of, 213. 



*Panama canal, the, by F. de Lesseps, 

 736. 



Papuans and Polynesians, by Eev. G. 

 Brown, 842. 



Parker (J.) on the circulation of under- 

 ground waters, 235. 



Parsons (Capt. J.) on the erosion of the 

 sea-coasts of England and Wales, 847. 



Peasant properties and x^rotection, by 

 Lady Verney, 755. 



Pengelly (W.) on the erratic blocks of 

 England, Wales, and Ireland, 223 ; on 

 the circulation of underground waters, 

 235 ; on the prehistoric race in the 

 Greek islands, 284 ; on a scrobicularia 

 bed containing human bones, at New- 

 ton Abbot, Devonshire, 841. 



Pennant (P. P.) on the caves of North 

 Wales, 219. 



Perkin (Dr. W. II.) on the magnetic 

 rotation of mixtures of water, and 

 some of the acids of the fatty series 

 with alcohol and with sulphuric acid, 

 and observations on water of crystal- 

 lisation, 579. 



Permanently frozen soil in tlie Polar 

 regions, the depth of tlie, its geo- 

 graphical limits and relation to the 

 present pole of greatest cold, report 

 on, 271. 



Perry (Prof. J.) on standards for use in 

 electrical measurements, 145. 



Perry (Prof. S. J.) on the best means 

 of comparing and reducing magnetic 

 observations, 64, 75. 



Petrography of the volcanic and as- 

 sociated rocks of Nuneaton, T. H. 

 Waller on the, 623. 



Phanerograms, P. Groom on the growing 

 point of, 707. 



Phosphoric crude iron, the treatment of, 

 in open-hearth furnaces, J. W. Wailes 

 on, 592. 



Photometric standards, the Harcourt and 

 Methven, comparison of, by W. S. 

 Bawson, 535. 



Phyllopbda, the fossil, of the palasozoic 

 rocks, fourth report on, 229. 



Physical constants of solution, second 

 report on the investigation of certain, 

 especially the expansion of saline 

 solutions, 207. 



Physical Section, the Mathematical and, 

 Address by Prof. G. H. Darwin to, 511. 



Physical science, P. Geddes on the ap- 

 plication of, to economics, 783. 



♦Physiological selection, an additional 

 suggestion on the origin of species, by 



G. J. Romanes, remarks on, by H. See- 

 bohm, 685. 



* Phytoplithora inffstans. Prof. 51. Ward 

 on the germination of the spores of, 

 700. 



Pickering (Prof. E. C), Draper memorial 

 photographs of stellar spectra exhibit- 

 ing bright lines, 553. 



Pickering (Prof. S. U.) on the nature of 

 solution, 581. 



Pitt-Rivers (Gen.) on the work of the 

 Corresponding Societies Committee, 

 285. 



Plant (J.) on the erratic blocks of Eng- 

 land, Wales, and Ireland, 223 ; on the 

 circulation of underground waters, 

 235. 



Player (J. H.), an accurate and rapid 

 method of estimating the silica in an 

 igneous rock, 471. 



Playfair (Col. Sir L.), a jonrnej^ in 

 Western Algeria, May 1886, 735. 



Pleistocene deposits of the Vale of Clwyd, 

 Prof. T. McK. Hughes on the, 632. 



Polarising prisms, the cutting of, Prof. 

 S. P. Thompson on, 520. 



Polynesians and Papuans, by Rev. G. 

 Brown, 842. 



Polystichum an{inlare,\ax. pidclierrimum , 

 notes on apospores in, by Prof. F. O. 

 Bower, 700. 



Poor, the state of the, in 1795 and 1833, 

 by G. H. Sargant, 781. 



Poulton (E. B.) on heredity in cats with 

 an extra number of toes, 692 ; on the 

 artificial production of a gilded ap- 

 pearance in certain lepidopterous pupa?, 

 ih. ; some experiments upon the pro- 

 tection of insects from their enemies 

 by means of an unpleasant taste or 

 smell, 694. 



Powell(Major), telegraphic dispatch from, 

 relative to the recent earthquake in the 

 United States, 656. 



Poynting (Prof. J. H.) on the work of 

 the Differential Gravity Meter Com- 

 mittee, 141 ; on electrolysis in its phy- 

 sical and chemical bearings, 308 ; on 

 the proof by Cavendish's method that 

 electric action varies inversely as the 

 square of the distance, 523. 



and E. P. J. Love on the law of the 



propagation of light, 521. 



Preece (W. H.) on standai-ds of light, 39 ; 

 on standards for use in electrical 

 measurements, 145 : on electric induc- 

 tion between wires and wires, 546 ; on 

 a magnetic experiment, ib. ; multiplex 

 telegraphy, 812 ; a portable electric 

 lamp, ib. 



and H. R. Kempe on a new scale for 



tangent galvanometer, 546. 



Pre-glacial man in North Wales, evidence 

 of, by Dr. H. Hicks, 839. 



