SECTIONS. INDEX OF SUBJECTS. 



317 



Sulphate of lead, sulphuretted, examination 

 of, by J. F. W. Johnston, 1831-32, 577. 



• and nitrate of lead. Prof. T. Clark on 

 the atomic weight of, 1839, 45. 



of lime with water. Prof. J. F. W. 



Johnston on a new compovmd of, 1838, 59. 



of lime, Chevalier Claussen on its ef- 

 fect upon vegetable substances, 1853, 38. 



Sulphates, alkaline, contained in alums, on 

 a mode of conserving the, by Prof. Frank- 

 land, 1855, 62. 



Sulphocyanides, E. A. Parnell on some sub- 

 jects connected with the, 1841, 51. 



Sulphomethylic acid. Dr. E,. Kane on the 

 salts of, 1835, 42. 



Sulphur, Dr. Schafhaeutl on, 1840, 68. 



found abundantly in the mountains of 



Mahra in Africa, 1846, 69. 



, on the effect of pressure on the tem- 

 perature of fusion of, by W. Hopkins, 



1854, 58. 



and phosphorus in organic compounds, 



on a method of determining, by Prof. 

 Yoelcker, 1855, 73. 



, vapour of, Eev. T. Exley on the specific 



gravity of the, 1838, 64. 



Sulphurets, on the action of, on metallic sili- 

 cates at high temperatures, by D. Forbes, 



1855, 62. 



Sulphuretted hydrogen, Dr. Lankester on 



the production of, 1841, 57. 

 Sulphuric acid, Prof. T. Tfeomson on the 



manufacture of, in Grlasgow, 1840, 59. 

 — — acid, Prof. Barker on its separation 



from peroxide of iron, 1835, 52. 

 acid, on tests for, when thrown on the 



person, by Dr. E. D. Thomson, 1840, 84. 



acid in the air and water of towns, 



Dr. E. A. Smith on, 1851, 52. 



— - acid, concentrated, on its action on 

 cubebin in relation to the test for strych- 

 nine by bichromate of potash and sul- 

 phuric acid, by J. S. Brazier, 1859, 256. 



. and arsenious acids. Dr. Schafhaeutl 



on a new compound of, 1840, 69. 



acid and water, Prof. T. Thomson on 



the combinations of, 1836, 56. 



■ acid and water, on certain laws ob- 

 served in the mutual action of, by B. 

 Stewart, 1855, 70. 



Sulphurous acid and the basic acetates of 

 lead. Dr. Scoffern on the combined use of, 

 in the manufacture of sugar, 1849, 42. 



acid and acetate of lead, as purifying 



agents in the manufacture of sugar. Dr. 

 Scoffern on, 1850, 60. 



— — acid gas, on its production from the 

 combustion of coal, by J.Spence, 1854, 75. 



Sun, H. Lawson on spots in the, 1847, 9. ' 



: M. Chacornac on solar spots and 



faeculj», 1854, 19. 



: suggestions for the observation of the 



annular eclipse of Oct. 1847, 1847, 16. 



— — , annular eclipses of the, Eev. Prof. 

 Powell on an explanation of the " beads" 

 and "threads" in, 1848, 2. 



Sun : annular eclipse of Oct. 9, 1847, Eev. 

 Prof. Powell on observations of the, 1 848, 3 , 



, Prof. C. P. Smyth on the red promi- 

 nences seen during the total eclipse of the, 

 in 1851, 1852, 13. 



, eclipse of the, mentioned in the first 



Book of Herodotus, Eev. Dr. E. Hincks 

 on the, 1856, 27. 



, on the constancy in amount of heat 



radiated from the, by Prof. C. P. Smyth, 

 1856, 28. 



, Sir D. Brewster on the blue colour of 



the, 1840, n. 



, on photographs of the, by Eev. J. B. 



Eeade, 1854, 10. 



, Prof. Draper on a change produced 



in the properties of an elementary sub- 

 stance by exposure to the beams of the, 

 1843, 9. 



Sun's rays, Eev. Prof. Cumming on an in- 

 strument for measuring the heating effect 

 of the, 1833, 418. 



• surface, E. Hodgson on a brilliant 



eruption on the, 1860, 36. 



Sunbeams, H. Twining on some of the ap- 

 pearances peculiar to, 1851, 35. 



, converging, Eev. Prof.Powell on, 1852, 



12. 



Sun-dial, universal, notice of a, 1849, 34. 



, moveable horizontal, M. Donovan on 



a, 1857, 24. 



Sun-signals, on a hand heliostat for, by F. 

 aalton, 1858, 15. 



Suns, meteors, &c., D. Yaughan on the light 

 of, 1857, 42. 



Superphosphates, on the methods of ana- 

 lysing the, by Prof. Voelcker, 1857, 60. 



Surfaces, vibrating, Prof. Wheatstone on the 

 acoustical figures of, 1831-32, 558. 



■ at minute distances, Eev. Prof. Powell 

 on the repulsion excited between, by the 

 action of heat, 1834, 549. 



of different colours, on the binocular 



vision of, by Sir D. Brewster, 1855, 9. 



■ ■ of bodies, on the absorption of matter 



by the, by Sir D. Brewster, 1855, 9. 



of wine and other alcoholic liquors, on 



certain curious motions observable on the, 

 by Prof. J. Thomson, 1855, 16. 



, umbilical, of the second order, having 



three unequal axes, on a general method 

 of deriving the properties of, from the pro- 

 perties of the sphere, by Eev. Dr. Booth, 

 1858, 2. 



Survey for level, from Bridgewater to Ax- 

 mouth, 1837, 59. 



for ascertaining the relative levels of 



land and sea, 1837, 59. 



Surveying instrument, new portable, by J. 

 Dunn, 1834, 594. 



Siis tribes of Morocco, E. Schlagintweit on 

 the, 1860, 177. 



Suspension-bridge, steel, over an arm of the 

 Danube at Vienna, Prof. W. J. M. Ean- 

 kine on the, 1831-32, 608. 



— — , flexible, W. J. Curtis on a, 1837, 132. 



