INDEX. 



795 



Palestine Exploration Fund, the geo- 

 graphical work of the, Trelawney 

 Saunders on, 741. 

 Papuans and the Polynesians, C. S. Wake 



on the, 696. 

 Parker (J.) on the circulation of under- 

 ground waters, 309. 

 »Patent Bill, the Society of Arts, Sir F. J. 



Bramwell on, 780. 

 Patent legislation, report on, 222. 

 Pengelly (W.) on underground tempera- 

 ture, 90 ; on the erratic blocks of 

 England, Wales, and Ireland, 204 ; on 

 the circulation of underground waters, 

 309. 

 Pennine chain, some vestiges of the 

 ancient forest of part of the, J. Lucas 

 on, 680. 

 Penrose (F. G.), report on the occupation 

 of the table at the zoological station at 

 Naples, 183. 



Peppermint-camphor (menthol) and some 

 of its derivatives. Prof. K. W. Atkin- 

 son and H. Yoshida on, 585. 



Periodic functions, singly and doubly, 

 the general analogy between the for- 

 mulae of, J. W. L. Glaisher on, 548. 



Perry (Prof, J.) on experiments to deter- 

 mine the thermal conductivities of 

 certain rocks, 126; on standards for 

 use in electrical measurements, 423. 



and Prof. W. E. Ayrton on a dyna- 

 mometer coupling, 553. 



Petalorhynchus, Ag., the zoological posi- 

 tion of the genus, a fossil fish from the 

 mountain limestone, J. W. Davis on, 

 646. 



Petrels, the anatomy and cla.ssification 

 of the, based upon those collected by 

 H.M.S. 'Challenger,' W. A. Forbes on, 

 671. 



Petrie (W. F.), notes on some specimens 

 of saw-cuts and drill-holes in hard 

 stones of primeval Egyptian period, 

 697. 



Phen6 (Dr.) on Scandinavian and Pictish 

 customs on the Anglo- Scottish border, 

 693 ; on some objects recently ex- 

 humed in Britain, of apparently Phoe- 

 nician origin, 695. 



Phipson (Dr. T. L.) on the new element, 

 actinium, 603. 



Phoenician origin, some objects of 

 apparently, recently exhumed in 

 Britain, Dr. Phen6 on, 695. 



Phosphates of lime and ammonia, note 

 on the, by J. A. Wanklyn, 597. 



Photographic spectrum of comet ' b ' 

 1881, W. Huggins on the, 520. 



♦Photometry, Prof. Sir Wm. Thomson 

 on, with experiments, 561. 



Physical Section, Address by Prof. Sir 

 Wm. Thomson to the Mathematical 

 and, 513. 



Physiology, Anatomy and. Address by 

 Prof. J, S. Burdon Sanderson to the 

 Department of, 705. 

 *Pickwell (R.) on continuous door-locks 

 and footboards for railway carriages, 

 776. 

 Pictish and Scandinavian customs on the 

 Anglo- Scottish border, Dr. Phene on, 

 693. 

 Pim (Capt. B.) *on British shipping and 

 the tonnage laws, 780 ; *on the lawyer's 

 marine pocket case, 781. 

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

 the Anthropometric Committee, 225 ; 

 on excavations in the earthwork called 

 Danes' Dyke at Flamborough, and on 

 the earthworks of the Yorkshire wolds, 

 690 ; on the discovery of flint imple- 

 ments in stratified gravel in the Nile 

 Valley, near Thebes, 693 ; on excava- 

 tions in a camp called Ambresbury 

 Banks in Epping Forest, 697. 

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

 land, Wales, and Ireland, 204 ; on the 

 circulation of underground waters, 309. 

 Plesiosauria, Simosaurus pusillus (Fraas), 

 a step in the evolution of the, Prof. H. 

 G. Seeley on, 618. 

 ■"Points in a plane, the aspects of Prof. 



Halphen on, 538. 

 *Points in a space, a connection between 

 homographies in a straight line and, C. 

 Stephanos on, 538. 

 "^Polar planes of a point with respect to 

 four quadric surfaces, W. Spottiswoode 

 on the, 547. 

 Polarising prism, a new. Prof. S. P. 



Thompson on, 563. 

 Polynesians and the Papuans, C. S. Wake 



on the, 696. 

 Potential due to contact, S. L. Hart on, 



555. 

 Poulton (E. B.), a preliminary account of 

 the working of Dowkerbottom Cave, 

 in Craven, during August, 1881, 622. 

 Preece (W. H.) on standards for use in 

 electrical measurements, 423 ; on the 

 application of electricity to the locali- 

 sation of a bullet in a wound, 531 ; 

 *on a screw-gauge for electrical ap- 

 paratus, 779. 

 Pressure of wind upon a fixed plane sur- 

 face, T. Hawkley on the, 480. 

 Prestwich (Prof. J.) on the erratic blocks 

 of England, Wales, and Ireland, 204 ; 

 on the circulation of underground 

 waters, 309 ; some observations on the 

 causes of volcanic action, 610 ; on 

 the strata between the Chillesford 

 beds and the lower boulder clay, ' The 

 Mundesley and the Westleton beds,' 

 620; on the extension into Essex, 

 Middlesex, and other inland counties, 

 of the Mundesley and Westleton beds, 



