INDEX. 



559 



Phosphates, on the mode in which 



the, pass into plants, 405. 

 Phosphorus-bases, on the, 147, 393. 

 Photometrical researches, 230. 

 Planets, on the perihelia and nodes 



of the, 316. 

 Plants, on the mode in which the 



phosphates pass into, 405. 

 Plesiosaurus, on a new species of, 



320. 

 Poinsot (M.) on the percussion of 



bodies, 161,263,349. 

 Prestwich (J.) on the boring through 



the chalk at Harwich, 154. 

 Propyhc alcohol, on the preparation 



of, 455. 

 Pteraspis, observations on the genus, 



319. 

 Quai-tz, on the lines observed on the 



faces of crystals of, 516. 

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



of carbonic acid gas, 303. 

 Rays, chemical, on the optical and 



chemical extinction of, 230. 

 Redaway (W.) on the gold-diggings 



at Ballaarat, 402. 

 Riche (M. A.) on the action of the 

 electric current on aqueous solu- 

 tions of chlorine, bromine, and 

 iodine, 328. 

 Ritchie's (Mr.) modification of Ruhm- 

 korfF's induction apparatus, obser- 

 vations on, 466. 

 Rive (M. De la) on the rotation of the 

 electrical light round the pole of 

 an electro-magnet, 463. 

 Robinson (T. R.) on fluorescence pro- 

 duced by the aurora, 326. 

 Rocks, on the part which the alkaline 

 silicates play in the metamorphism 

 of, 68; on the origin of, 152. 

 Rogers (Prof. W. B.) on some sonor- 

 ous flames, 261, 404. 

 Rosales (H.) on the gold-diggings at 



Ballaarat, 483. 

 Roscoe (Dr. H. E.) on the optical and 

 chemical extinction of chemical 

 rays, 230. 

 Royal Society, proceedings of the, 



68, 140, 226, 306, 393, 469, 538. 

 Salicyhc acid, action of sulphuric acid 



upon, 143. 

 Sappiiires, on the production of arti- 

 ficial, 109. 

 8aus.suritc, analysis of, 553. 

 Schisclikofr(L.) on nitroform, .'102; 



on the chemical theory of gun- 

 powder, 489. 

 Schneider (R.) on the atomic weights 



of cobalt and nickel, 115. 

 Schonbein (Dr.) on the various con- 

 ditions of oxygen, 24. 

 Schiller (M.) on acetosalicyle, 301. 

 Schunck (Dr. E.) on the formation of 



indigo-blue, 29, 117, 183. 

 Scott (R. H.) on the composition of 

 anorthite from the Ouial Moun- 

 tains, 518. 

 Selwyn (A. R. C.) on the geology of 



the gold-fields of Victoria, 40(). 

 Seneca (F.) on Perowskite, 554. 

 Sihcon, on a new mode of preparing, 

 1 14 ; on some new compounds of, 

 456. 

 Silure, on the electrical, 45. 

 Smyth (R. B.) on the extinct vol- 



canos of Victoria, 74. 

 Solar spots, on the motions of the, 444 . 

 Solids, on the thermal effects of lon- 

 gitudinal compression of, 538. 

 Sorby (H. C.) on the microscopical 



structure of crystals, 152. 

 Sphenes, British, on some new forms 



of, 134. 

 Spirator, on a new form of, 64. 

 Stars, variable, on the, 359. 

 Stereoscopic phsenomena, on some, 



397. 

 Stoney (G. J.) on the adjustments of 

 the needle of a tangent-galvano- 

 meter, 135, 327. 

 Storms, on the law of, 345. 

 Sun, on the existence of an atmo- 

 sphere surrounding the, 444; on the 

 conditions of the surface of the, 90. 

 Tait (P. G.) on the density of ozone, 



146. 

 Tangent-galvanometer, on the adjust- 

 ments of the needle of a, 135, 327. 

 Tebay (S.) on the law of Bode, and 

 on the rotation of a heavenly body, 

 206. 

 Telestereoscope, on the, 19, 156. 

 Temperatm'e, teiTCstrial, observations 



on, 310. 

 Thenard (M. P.) on the mode in 

 which the phosphates pass into 

 plants, 405. 

 Thermometers, on a difference in the 



march of air- and mercury-, 212. 

 Thialdine, researches on, 140. 

 Thomson (Prof. W.) on the effects of 



