INDEX II. 



141 



Soils, OD the causes, physical and chemi- 

 cal, of diversities of, 43. 



Sollitt (J. D.) on the composition and 

 figuring of the specula of reflecting 

 telescopes, 10 ; on the chemical con- 

 stitution of the H umber deposits, 49 ; 

 on the Diatomacese found in the neigh- 

 bourhood of Hull, 63. 



Somers (W.) on a new alga, 63. 



Specula of reflecting telescopes, on the 

 composition and figuring of the, 10. 



Sponges, on the curious spiral body in 

 certain fossil, from the Yorkshire strata, 

 51. 



Statham (Rev. F. F.) on a curious exem- 

 plification of instinct in birds, 71 ; on 

 the consumption of smoke in furnaces 

 and manufacturing premises, 1 27 ; on 

 railway collisions, with suggestions for 

 their prevention, 129. 



Statistics, 97- 



Steam-boilers, on a patent safety alarum 

 for, 119; on an improved compound 

 safety-valve for, ib. 



Steam-engine boiler, on an improved pa- 

 tent, 120. 



Steam-engine indicator, on the, 118. 



Steam-ships, on improvements in the 

 construction of, 121. 



Stereoscope, on the angle to be given to 

 binocular photographic pictures for 

 the, 4. 



St. Ives, on parhelia observed at, 33. 



St. Lucia Bay, on a second journey to, 

 90. 



Stone, on the elasticity of, 36. 



Storm, on the continuation across the 

 country of the thunder and rain, of 

 Sept. 1832, 32. 



Strata, on remarkable fossils from the 

 Yorkshire, 54 ; on remarkable cases of 

 uniformity among the, of Yorkshire, 

 ib. 



Strata-currents, on deep-sea soundings 

 and errors therein from, with sugges- 

 tions for their investigation, 22. 



Strickland (H. E.) on pseudomorphous 

 crystals in new red sandstone, 61 ; on 

 the partridges of tlin great water- shed 

 of India, 71 ; on the mode of growth of 

 Halichondria suberea, 72. 



Sugar cargoes, on the corrosion of iron- 

 built ships by, 41. 



Swale, artificial breeding of salmon in 

 the, 68. 



Sweden, on certain localities not in, oc- 

 cupied by Swedish populations, 86. 



Switzerland, summary of the census of, 

 102. 



Sylvester (J. J.) on the expressions for 



the quotients which appear in the ap- 

 plication of Sturm's method to the 

 discovery of the real roots of an equa- 

 tion, 1. 

 Symphytum officinale, on the growth of, 

 63. 



Tarapaca, on the province of, in South 



Peru, 88. 

 Telescope, on a graphic, 10 ; on the com- 

 position and figuring of the specula of 



reflecting, ib. 

 Temperature and mechanical force, on a 



law of mutual dependence between, 1 1 . 

 Temperature of the North Atlantic 



and Northern Oceans, on the surface, 



18. 

 Thermometers, on the graduation of 



standard, at the Kew Observatory, 34. 

 Thomson (James) on an experimental 



apparatus constructed to determine the 



efficiency of the jet-pump, and a series 



of results obtained, 130. 

 Thomson (W. T. C.) on some Ayrshire 



fossils, 61. 

 Thunder- cloud, on a terrific, on the 



Wolds, Sept. 26, 1852, 32. 

 Tickell (Capt.) on late surveys in Arra- 



can, 92. 

 Tourmaline, titanium and quartz, on the 



optical phsenomena and crystallization 



of, within mica, amethyst, and topaz, 3. 

 Townsend (R. W.) on refracted lines of 



cleavage seen in the slate- rocks of 



Ballyrizora in the county of Cork, 



61. 

 Trigonometrical survey, on the progress 



made in the publication of the, 37. 

 Tropics, on variations of climate within 



the, 91. 

 Tubular or double life-boat, on the, 1 13. 

 Twamley (Charles) on a singular fault in 



the southern termination of the War- 

 wickshire coal-field, 62. 



Valve for steam-boilers, on an improved 

 compound safetj', 119. 



Valve-engine, a brief description of Lock- 

 ing and Cook's patent rotatory, and of 

 its advantage, 120. 



Vapours and their liquids, on the density 

 of saturated, at the point of transition, 

 11. 



Varley (Cornelius) on a graphic tele- 

 scope, 10. 



Vegetable and animal organisms, on 

 preserving the balance between, in sea- 

 water, 72. 



Vegetable substances, on the effects of 

 sulphate of lime upon, 38. 



