INDEX. 



567 



Otto (M.) on some derivatives of 



benzoic and hippuric acids, 190. 

 Oxycinchonine, researches on, 527. 

 Paalzow (Dr.) on magnetizing steel 

 needles by the current of a Leyden 

 jar, 494. 

 Parallel surfaces, on some applications 



of a theorem relating to, 39. 

 Pelouze (M.) on American petroleum, 



384. 

 Phillips (Dr.) on the progress of 



selenography, 555. 

 Plateau (Prof. J.) on figures of equi- 

 librium of a liquid mass without 

 weight, 128. 

 Potter (Prof.) on the aurorae boreales, 

 51 ; on some properties of the air 

 thermometer, 263; on the defini- 

 tion of the temperature of bodies, 

 and on its measurement by ther- 

 mometers, 447. 

 Pratt (Archdeacon J. H.) on the fluid 

 theory of the figure of the earth, 

 409, 507 ; on a geometrical proof 

 of the fundamental principle of 

 Laplace's functions, 504. 

 Probabilities, on a question in the 



theory of, 80. 

 Pyroracemic acid, on some products 



of the decomposition of, 191. 

 Quintics, on, 193, 457. 

 Radiation, on internal, 474. 

 Ramsay (Prof.) on the excavation of 



the valleys of the Alps, 377- 

 Rankine (W. J. M.) on the exact form 

 and motion of waves at and near 

 the surface of deep water, 420. 

 Regnault (V.) on the determination 

 of temperature and pressure in 

 balloon ascents, 213. 

 Rieth (M.) on the preparation of 



zinc-ethyle, 306. 

 Rijke (Prof.) on some properties of 



the induced current, 249. 

 Roberts (Rev. W.) on some applica- 

 tions of a theorem relating to par- 

 allel surfaces, 39. 

 Rodvvell (G. F.) on the dynamic 



theory of heat, 327. 

 Rosaniline, 547. 

 Rosse (Earl of) on the nebulae, 



237. 

 Rossi (M.) on some organic radicals, 



24. 

 Roval Institution, proceedings of the, 

 57, 162. 



Royal Societv, proceedings of the, 66, 



149,225,311,392,474, 542. 

 Rubidium, on the preparation of com- 

 pounds of, 46 ; on the occurrence 

 of, 382. 

 Rue, on the constitution of the essen- 

 tial oil of, 529. 

 Sabine (General) on the cosmical 

 features of terrestrial magnetism, 

 97 ; on some conclusions derived 

 from the photographic records of 

 the Kew declinometer, 542. 

 Salter (J.W.)onfossilcrustaceans,166. 

 Sandberger (Prof. D. F.) on some 

 upper eocene fossils from the Isle 

 of Wight, 76. 

 Sarcosine, on the synthesis of, 529. 

 Schcenbein (Prof.) on the formation 

 of nitrite of ammonia from atmo- 

 spheric air, 520. 

 Schrader (M.) on the oxides of bis- 

 muth, 28. 

 Schwanert (M.) on camphrene, 530. 

 Selenography, sketch of the progress 



of, 555. 

 Siemens's gas-furnaces, observations 



on, 162. 

 Simmler (M.) on a fluorescent solu- 

 tion from cane-sugar, 192. 

 Skew surface of the third order, on 



the, 514. 

 Soda, on the preparation of pure 



caustic, 27. 

 Spectrum, on the Fraunhofer-lines 

 visible in the solar, 1 ; on the atmo- 

 spheric lines of the solar, 70 ; ob- 

 servations on the solar, 407 ; on 

 the action of various coloured 

 bodies on the, 441. 

 Spectrum analysis, observations on, 



519. 

 Starch, on nitric compounds of, 526. 

 Stewart (B.) on the nature of the red 

 protuberances seen on the sun's 

 limb during a total eclipse, 302 ; 

 on the great magnetic disturbance 

 of 1859, 315. 

 Stokes (G. G.) on internal radiation, 

 474 ; on the intensitv of the light 

 reflected from a pile of plates, 480. 

 Strange (Lieut. -Colonel A.) on alu- 

 minium bronze as a material for the 

 construction of philosophical in- 

 struments, 508. 

 Strecker (Dr.) on oxycinchonine and 

 caffeidine, 527. 



