INDEX. 



557 



Page. 



Q 



Quartz, transition of, into crystallized granitic rocks, 221 



R 



Refraction, Number of the Axes of Double, connected with 



Primitive Forms of Crystals, - - 50 



Rocks of Sandside, observations on the, - - 220 



Ross, Captain, Plants found by, on the shores of Baffin's 



Bay, - - - 433 



S 



S 



Sandstone, extraordinary hardness of some masses of, in 



Coal-fields, - - 132 



i hard masses of, contained in the softer, 235 



Petrifactions, account of some, - 156 



in some cases, a chemical deposite, - 162 



Red, containing imbedded portions of clay and 



compact limestone, - - 235 



Curious conglomerated-like, - 289 



Sandbanks, dimensions of, in the German Ocean, 320 

 Sandside, in Caithness, on the Rocks of, by Professor 

 Jameson, 220. — Crust of the Earth, composed 

 of five simple minerals, ibid. — Transition of 

 Quartz into Crystallized Granite Rocks, 221 — 

 Syenites, Granites, Conglomerates, Sandstone, 

 and Limestone, members of the same formation, 

 224. 



Scoresby, Captain, Plants found by, in Spitzbergen, 423 

 Sea, on the Luminosity of the, by John Murray, Esq. 



466 — Causes assigned for it, 467. — Luminous 



Beroe, 468. — Medusa, 470. 

 Sea, North, on the Bed of, - - 314 



