INDEX. 



Ut 



Polarization and double refraction, ob- 

 servations on, 354 ; on circular polari- 

 zation, 416. 



Phytelephas macrocarpa, examination of 

 the seeds of, 543. 



Pouniarerte (M. J. A.) on a double sul- 

 phate of protoxide and sesquioxide of 

 iron, 319. 



Preisser (M.) on bresiline and bresileine, 

 78. 



Procter (W.) on the oil of gualtheria, 

 480. 



Procul on t!ie proposition that every 

 function F {ia,cj) which does not become 

 infinite between the limiting values 

 — 1 and 1 of (tt and and 2 * of « may 

 be expanded in a series of Laplace's 

 coefScients, 337. 



Pyramids of Gizeh, on the entrance-pass- 

 ages in the, 133. 



Pyramids, on the mode of constructing 

 the, 404. 



Quaternions, observations on, 10, 241, 

 489. 



Heade (J.) on electro-rotatory points and 

 the pyro-electricity of glass, 344. 



Redfield (Mr.) on the law of storms, 94. 



Rigby (Dr. E.) on waterspouts, 210. 



Robinson (G.) on the absorbing power of 

 streams, with remarks on the pulsation 

 of jets, 141. 



Rosse (the Earl of) on some of the nebulae, 

 144. 



Royal Astronomical Society, proceedings 

 ofthe, 71,224, 302. 



Royal Society, proceedings ofthe, 141. 



Schmidt (Dr. C.) on the preparation and 

 composition of limone, 545. 



Sea-weeds, on the occurrence of raannite 

 in, 262. 



Sedgwick (Prof.) on the geology of North 

 Wales, 213. 



Shaw (G.) on some photographic phaeno- 

 mena, 445. 



Simon (J.) on the anatomy of the thyroid 

 gland, 145. 



Smee (A.) on the cause of the reduction 

 of metals when solutions of their salts 

 are subjected to the galvanic current, 

 434. 



Solar eclipse of 1843, observations on the, 

 311. 



Spectrum, on the phosphorogenic rays in 

 the. 111. 



Spratt (Lieut.) on the geology of the 

 Maltese islands, 212; on the geology 

 oftheGulf of Smyrna, 219. 



Stagg (J. D.) on the prevention of explo- 

 sions in collieries, 350. 



Stars, on the right ascensions of the prin- 

 cipal fixed, 306. 



Steel bars, description of a simple method 

 of magnetizing, 348. 



Stenhouse (Dr. J.) on the salts of meconic 

 and komenic acids, 192; on the reduc- 

 tion of the salts of peroxide of iron by 

 means of vegetable substances, 199; 

 on the hydrate of the oil of laurel tur- 

 pentine, 200 ; on East Indian grass-oil, 

 201 ; on the occurrence of mannite in 

 sea-weeds, 262 ; on the preparation of 

 benzoic acid, 283; on a yellow sub. 

 stance from India called purree, 321. 



Stembergia, observations on, 217. 



Stevenson (W. F.) on the supposed pro- 

 perties of the electric and magnetic 

 fluids, 142. 



Storms, on Dove's law of, 94. 



Strickland (II. E) on the existence of 

 struthioxis birds distinct from the Dodo, 

 497. 



Stubbs (J. W.) on new theorems relative 

 to the conic sections, 208. 



Surfaces of the second degree, on some 

 new properties of, 188. 



Sylvester (J. J.) on the existence of ab- 

 solute criteria of rationality for the 

 roots of numerical equations, 442. 



Telescope, on the measurement of di- 

 stances by the, 141. 



Temperature, on the changes of, produced 

 by the rarefaction and condensation of 

 air, 148. 



Teschemacher (E. F.), mineralogical no- 

 tices, 231. 



Thomson (R. D.) on parietine, and on the 

 inorganic constituents of lichens, 39 ; 

 on some New Zealand and Antarctic 

 minerals, 495. 



Thomson (T. S.) on the diffusion of gases, 

 51, 282. 



Thomson (T.) on coal-gas, 161. 



Thyroid gland, on the comparative ana- 

 tomy ofthe, 145. 



Tithonicity, observ'ations on, 1, 103. 



Tithonometer, improvement in the, 1 07. 



Tortoise, fossil, description of a, from the 

 Sewalik Hills, 532. 



Urine, on the constitution of the, 453. 



Vegetable ivorv, chemical examination of, 

 543. 



Vegetable substances, on the reduction 

 of the salts of peroxide of iron by, 

 199. 



Vegetation, action of the yellow rays of 

 light on, 339. 



Verneuil (M.) on the European equiva- 

 lents of the Permian system, 217. 



Voltaic circuit, on the relation of elec- 

 trical and chemical actions before and 

 after completion of the, 285. 



Waechter (M. A.) on the preparation and 



