140 



phide of calcium as a remedy for grape 

 disease, 63. 

 Pycnogonidae, on the morphology of the, 

 66. 



Quartz, auriferous, on the comparative 

 richness of, extracted at different 

 depths from the same lode, 50. 



Rafns (Prof.) on contributions to the 

 ancient geography of the arctic re- 

 gions, 91 . 



Railways, on an electric semaphore for 

 use on, 131. 



Railway accidents, an analytical view of, 

 in this country and on the continent 

 of Europe, from 1840 to 1852, 109. 



Railway accidents by collision, and sug- 

 gestions for their prevention, 125, 129. 



Rankin (Rev. T.), meteorological sum- 

 mary for 1852 of observations at Hug- 

 gate, Yorkshire, 32 ; on a terrific 

 thunder-cloud on the Wolds, Sept. 26, 

 1852, ib. ; on the continuation across 

 the country of the thunder and rain 

 storm, which commenced in Hereford- 

 shire on Sept. 4, and terminated on 

 the Yorkshire Wolds on Sept. 5, 1852, 

 ib. ; on the formation of boulders, 54 ; 

 on the Brigantes, the Romans, and the 

 Saxons in the Wolds of Yorkshire, 

 91. 



Rankine (W. J. M.) on an oscillatory 

 theory of light, 9; on a proposed ba- 

 rometric pendulum for the registration 

 of the mean atmospheric pressure 

 during long periods of time, 26. 



Rathbone (Theodore W.) on a proposed 

 plan for decimal coinage, 112. 



Reaping machinery, on, 114. 



Redfern (Peter) on the connexion be- 

 tween cartilage and bone, 7 1 • 



Richardson (Henry) on the tubular or 

 double life-boat invented by, 113. 



Roberts (Richard) on certain improve- 

 ments in the construction of steam- 

 ships, life-boats, and other vessels, also 

 in steam-boilers, propellers, anchors, 

 windlasses, and metallic casks, 121. 



Rocks, on a chemical cause of change 

 in the composition of, 52 ; on the 

 dispersion of erratic, at higher levels 

 than their parent rock in Yorkshire, 

 54. 



Rotation, on the magnetism of, in masses 

 of crystallized bismuth, 6 ; developed 

 in very small insulated metallic parti- 

 cles, ib. 



Rottenstone, on the origin and composi- 

 tion of the mineral called, 42. 



Russell (R.) on the action of the winds 

 which veer from the south-west to 

 west, and north-west to north, 32. 



Salmon, artificial breeding of, in the 

 Swale, 68. 



Samuelson (Bernhard) on recent im- 

 provements in machines for tilling 

 land, 121. 



Sandstone, on pseudomorphous crystals 

 in new red, 61. 



Saunders (Trelawny) on the variations 

 of climate within the tropics, in con- 

 nexion with the vertical action of the 

 sun and the actual motion of the 

 earth, especially with reference to the 

 climate of the Gulf of Carpentaria in 

 North Australia, 91. 



Scarborough, on a Jiving specimen of 

 Priapulus caudatus dredged off the 

 coast of, 70. 



Scoresby (Rev. W.) on the surface tem- 

 perature and great currents of the 

 North Atlantic and Northern Oceans, 

 18 ; on deep-sea soundings and errors 

 therein from strata currents, with sug- 

 gestions for their investigation, 22 ; on 

 the popular notion of an open polar 

 sea, is it the fact? 92 ; on railway ac- 

 cidents by collision, and suggestions 

 for their prevention, 125. 



Sea- currents, 12. 



Sea, depth of, 12. 



Sea-water, on preserving the balance be- 

 tween vegetable and animal organisms 

 in, 72. 



Seas, Indian, on the currents of the, 12. 



Sedgwick (Rev. Prof.) on the classifica- 

 tion and nomenclature of the older 

 palaeozoic rocks of Britain, 54. 



Seeds, method of accelerating the germi- 

 nation of, 63. 



Selkirk (Rev. James) on the causes, ex- 

 tent, and preventives of crime, with 

 especial reference to Hull, 112. 



Semaphore, on an electric, for use on 

 railways, 131. 



.Ships, iron-built, on the corrosion of, by 

 sugar cargoes, 41. 



Slate-rocks of Ballyrizora, in the county 

 of Cork, on refracted lines of cleavage 

 seen in the, 61. 



Smoke, on the consumption of, in fur- 

 naces and manufacturing premises, 

 127. 



Snowdon,on a concentric iris as seen from 

 the ridge of, 26. 



Soda, new method for determining 

 amount of chlorine contained in hypo- 

 chlorite of, 48. 



