INDEX. 



551 



Partition, compouad, on the general 

 theoiy of, 3/1. 



Partitions of the r-pyvamid, on the, 

 54. 



Pasteur (M.) on the alcoholic fermen- 

 tation of sugar, 367- 



Pettenkofer (M.) on the atomic 

 weights of the elements, 216. 



Planimeters, on, 230. 



Plateau (M. J.) on the equilibrium 

 figures of a liquid mass without 

 weight, 23. 



Pleistocene sea-bed of the Sussex 

 coast, on the, 233. 



Pliicker (M.) on the action of the 

 magnet upon the electrical dis- 

 charge in rarefied gases, 119,408. 



Polarity, on organic, 318. 



Polarized fasciculi, on the theory of, 

 69. 



Pollock (Sir F.) on some remarkable 

 properties of numbers, 537. 



Poly-ammonias, notes of researches 

 on the, 309, 532. 



Potter (Prof.) on the properties 

 of compound double - refracting 

 rhombs, 419. 



Power (Rev. J.) on the theory of po- 

 larized fasciculi, commonly known 

 as Haidinger's brushes, 69. 



Pratt (Archdeacon) on the figure of 

 the Indian meridian, 401. 



Prestwich (J.) on the Pleistocene sea- 

 bed of the Sussex coast, 233. 



Propyle-glycol, on, 295. 



Pullen (Capt.) on deep-sea sound- 

 ings, 458. 



Ramsay (Prof. A. C.) on some of the 

 glacial phaenomena of Canada 

 during the drift-period, 74. 



Ranieri (M.) on volcanic formation of 

 sal-ammoniac, 368. 



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

 of ships, 238. 



Rhombs, on the properties of com- 

 pound double-refracting, 419. 



Roots, on Cauchy's theorem of imagi- 

 nary, 232. 



Royaf Society, proceedings of the, 51, 

 140, 219, 298, 3/6, 458, 524. 



Rubidge (Dr. R. N.) on the geology 

 of South Africa, 475. 



Rue, on the constitution of the 

 essential oil of, 380. 



Russell (Dr. W. J.) on the measure- 

 ment of gases in analysis, 524. 



Sabine (Maj.-Gen. Ed.) on hourly 

 observations of the magnetic de- 

 clination, 51; on magnetic obser\'a- 

 tions transmitted from York Fort, 

 Hudson's Bay, 143. 



Sal-ammoniac, on volcanic formation 

 of, 368. 



Salm-Horstmar (Prince) on the fluor- 

 escence of a solution of fraxine, 

 159. 



Salmon (Rev. G.) on the double tan- 

 gents to plane cm-ves, 318. 



Schlippe (M.) on crotonic acid, 298. 



Schlossberger (Dr.) on a solvent for 

 cellulose, 523. 



Schonbein (Prof. C. F.) on the allo- 

 tropic modifications of oxygen, and 

 on the compound nature of chlorine, 

 bromine, &c., 178. 



Schweizer (Prof.) on a solvent for cel- 

 lulose, 523. 



Scrope (G. P.) on lamination and 

 cleavage, 75. 



Secchi (A.) on solar spots, and the 

 method of determining their depth, 

 495. 



Sedgwick (Prof.) on dislocations of 

 rocks between Leven and Duddon 

 Sands, 155. 



Ships, on the resistance of, 238. 



Siliciuretted hydrogen, on inflam- 

 mable, 520. 



Simpson (Dr. M.) on a new base ob- 

 tained by the action of ammonia 

 on terbromide of allyle, 257. 



Smyth (W.) on the iron ores of Ex- 

 moor, 236. 



Solar light, on the alleged influence of, 

 on the process of combustion, 182. 



spots, observations on, 95, 100, 



495 ; method of determining their 

 depth, 495. 



Solon, on the statue of, mentioned by 

 .^schines and Demosthenes, 317. 



Sophista of Plato, on the, 229. 



Sound, on the theories of, 481, 528. 



Soundings, on deep-sea, 458. 



Stadeler(Dr.) on the alleged produc- 

 tion of urea from albumen, 139. 



Stereomonoscoj)e, on the, 462. 



Stethophone, on the difl"erential, 385. 



Stigmaria ficoides, on the structure 

 of, 73. 



Stokes (Prof.) on the discontinuity of 

 arbitrary constants which appear in 

 divergent developments, 7 1 . 



