INDEX. 



551 



Pollock's (Sir F.) method of proving the 

 three leading properties of the ellipse 

 and the hyperbola from a well-known 

 property of the circle, 48. 



Polygonum bistortum, chemical examina- 

 tion of, 335. 



Prater (Mr.) on Moser's discovery, 227. 



Pring (J. H.) on a method of etching on 

 hardened steel plates and other polished 

 metallic Surfaces by means of electri- 

 city, 106. 



Problem of three bodies, observations on 

 the, 8. 



Rainey (G.), observations on the descend- 

 ing fluids of plants, 54. 



Redfield (W. C.) on whirlwind storms, 92 ; 

 on the palaeontology of North America, 

 180. 



Refracting indices of bodies, on an in- 

 strument for ascertaining the, 509. 



Resins, examination of some new, 81. 



Rigg (R.) on the compound nature of 

 carbon and nitrogen, 383. 



Roberts (M. J.) on the analogy between 

 the phaenomena of the electric and ner- 

 vous influences, 41. 



Roberts (W.) on the rectification of lem- 

 niscates and other curves, 138 ; on a 

 class of spherical curves, 140. 



Royal Astronomical Society, proceedings 

 of the, 145,311,472. 



Royal Irish Academy, proceedings of the, 

 135. 



Royal Society, proceedings of the, 47, 368. 



Russia, geological survey of, 57. 



Sabine (E.), contributions to terrestrial 

 magnetism, 377, 380. 



Sandstone systems, on the variegated ap- 

 pearances of the new and old red, 1. 



Saturn, places of, computed by Hansen's 

 formula, 298. 



Scharling (E. A.) on the exhalation of 

 carbonic acid from the human body, 72. 



Scotland, on the latest geological changes 

 in the south of, 28. 



Selenium, observations on, 141. 



Sharpe (D.) on the Bala limestone, 525 ; 

 on the Silurian rocks of the South of 

 Westmoreland and North of Lancashire, 

 533. 



Shaughnessy (W. B.) on the use of light- 

 ning-conductors in India, 177. 



Simms (W.) on a self-acting circular di- 

 viding engine, 145. 



Skin, on the special function of the, 

 50. 



Smee (A.) on the cause of the reduction 

 of metals from solutions of their salts 

 by the voltaic circuit, 51. 



Smith (B. R.) on the structure of the 

 Delta of the Ganges, 519. 



Smith (J. D.) on the composition of an 



acid oxide of iron, 217 ; on the consti- 

 tution of the subsalts of copper, 496. 



Sobrero (A.) on olivile, 156. 



Solly (E.) on the colour of solutions of 

 chloride of copper, 367. 



Spleen, on the structure of the, 370. 



Spratt (T. A. B.) on the geology of the 

 island of Rhodes, 465. 



Stark (Dr.) on the supposed development 

 of animal tissues from cells, 379. 



Steam, on the electricity of, 194. 



Stenhouse (Dr.) on some astringent sub- 

 stances, 331 ; on theine and its prepa- 

 ration, 426. 



Stevenson (W.) on the stratified rocks of 

 Berwickshire, 539. 



Storms, on the theory of, 92, 481 ; of 

 tropical latitudes, on the, 206, 276. 



Strickland (H. E.) on the occurrence of 

 the Bristol bone-bed, 301 ; on some 

 remarkable concretions in the tertiary 

 beds of the Isle of Man, 522 ; on im- 

 pressions in the lias bone-bed in Glou- 

 cestershire, 531. 



Stubbs (J. W.) on the application of a 

 new method to the geometry of curves, 

 and curve surfaces, 338. 



Succisterene, composition of, 479. 



Sugar of the Eucalyptus, composition of 

 the, 14. 



Sulphates, on the existence of a com- 

 pound radical in certain, 203. 



Sulphuric acid, on the non-precipitation 

 of lead from, 314 ; existence of tin in, 

 317. 



Sulphurous acid, action of potassium and 

 sodium on, 545 ; action of zinc on, 

 ib. 



Sun, decomposition of carbonic acid gas 

 by the light of the, 161. 



Swan (J.) on the origin of the nerves, 

 the cerebellum, and the striated bodies, 

 384. 



Tate (W.) on factorial expressions and the 

 summation of algebraic series, 369. 



Tea, chemical examination of, 321, 426. 



Terbium, observations on, 251. 



Theine, on the preparation and constitu- 

 tion of, 426. 



Thermography, observations on, 415. 



Thermometer, indications of, during 

 stormy weather, 446. 



Thomson (R. D.) on the examination of 

 the Cowdie pine resin, 81 ; on the re- 

 sults of the panary fermentation and 

 on the nutritive values of the bread of 

 different countries, 321. 



Tin, presence of, in sulphuric acid, 317. 



Tithonometer, description of the, 401. 



Tithonotype, observations on the, 161. 



Trimmer (J.) on pipes or sandgalls in 

 chalk, 521. 



