280 



REPORT — 1859. 



arrangement of oxides and salts on a 

 common type, 259. 



Pogson (Norman) on an improvement in 

 the heliometer, 36 ; on three variable 

 stars, R and S Ursse Majoris, and U 

 Geminorum, as observed consecutively 

 for six years, ib. 



Polyzoa, marine, collected by G. Barlee, 

 Esq., in Shetland and the Orkneys, 

 144. 



Ponton (Mungo) on certain laws of chro- 

 matic dispersion, 15 ; on the law of 

 the wave-lengths corresponding to cer- 

 tain points in the solar spectrum, 20. 



Porro (M.), portable apparatus for ana- 

 lysing light, 63. 



Post-pliocene deposits, on the occurrence 

 of works of human art in, 93. 



Pottery, on a fragment of, found in super, 

 ficial deposits in Paris, 124. 



Price (John) on slickensides, 123; on the 

 genus Cydippe, 155. 



Propellers, on the comparative value of, 

 243 ; on Robertson's patent chain, ib. 



Pterichthys, on the restoration of, in ' The 

 Testimony of the Rocks,' 263. 



Pycnogonidae, on a form of parasitism 

 among the, 143. 



Quarries, granite, of Aberdeen and Kin- 

 cardineshire, 235. 



Quartzite, on the relations of the gneiss, 

 red sandstone and, in the North-west 

 Highlands, 119. 



Quaternions, on an application of, to the 

 geometry of Fresnel's wave-surface, 

 248. 



Radiguel (M. A.) on a fragment of pot- 

 tery found in superficial deposits in 

 Paris, 124. 



Railway carriages, on gas carriages for 

 lighting, with coal-gas instead of oil, 

 235. 



Railway communication between the At- 

 lantic and Pacific oceans, on the, 266. 



Rain, on the fall of, in Forfarshire, 47; 

 tables of, registered at Georgetown, 

 Demerara, 52. 



Rainey (George) on the structure and 

 mode of formation of starch-granules, 

 according to the principles of molecular 

 science, 140. 



Rankin (Rev. T.), meteorological obser- 

 vations made at Huggate, Yorkshire, 

 52. 



Rankine (W. J. Macquorn) on the expe- 

 riments by Messrs. Napier and Sons, on 

 the strength of wrought iron and steel, 

 242. 



Ransome (Frederick) on soluble silicates, 

 and some of their applications, 78. 



Redfern (Dr.) on the method of produc- 

 tion of sound by a species of Notonecta, 

 173 ; on the admixture of nervous and 

 muscular fibres in the nerves of the 

 Hirudo medicinalis and other leeches, 

 ] 74 ; on the structure of the otoliths of 

 the cod (Gadus Morrhua), ib. 



Refraction, on a new species of double, 

 10. 



Reptilian remains, on the newly dis- 

 covered, from the neighbourhood of 

 Elgin, 261. 



Robb (John) on the comparative value of 

 propellers, 243. 



Robertson's patent chain propeller, 243. 



Rocks, volcanic, in Italy, which appear to 

 have been subjected to metamorphic 

 action, 102; on the chronology of the 

 trap, of Scotland, 106; stratified, in 

 Aberdeenshire, on the connexion of the 

 granite with the, 114. 



Rocky Mountains, description of passes 

 through the, 180. 



Rogers (Prof. H. D.) on some observa- 

 tions on the parallel roads of Glenroy, 

 265. 



Roman camp at Ardoch, on the, 183. 



Rosse (The Earl of), introductory re- 

 marks to the Mathematical Section, 1 . 



RuhmkorfF(M.) on a new electro-medical 

 apparatus, 62. 



Russian trade, on the, with Central Asia, 

 186. 



Saccharine solutions and other liquids, on 

 a pan for evaporating, 230. 



Salmonidse, on the classification of the, 

 153. 



Salts, on the comparative value of certain, 

 for rendering fibrous substances non- 

 inflammable, 86 ; on a symmetrical 

 arrangement of, 259. 



Sandeman (P.) on tables of rain registered 

 at Georgetown, Demerara, 52. 



Sandstone: — on Dura Den, 97; of Kin- 

 goodie, on a horseshoe nail found in 

 the red, 101 ; yellow, of Elgin and Los- 

 siemouth, 109; on some new fossils 

 from the old red, of Caithness, 115; 

 on the age of the reptilian, of Moray- 

 shire, ib. ; on new fossils from the lower 

 old red, 116; on the relations of the 

 red, gneiss, and quartzite in the North- 

 west Highlands, 119; on fossil fish, new 

 to the old red, of Caithness, 120 ; on 

 some fishes and tracks from the old 

 red, of Herefordshire, 124; on some 

 old red fossils, 126. 



