INDEX. 407 
_ characters of several new shells belonging to the Linnzean volute, 
28—38 
Ships, the copper sheeting of, how prevented from becoming cor- 
roded by the action of sea-water, 253, 279, 280. Experimental 
inquiries relative to the distribution and changes of the magnetic 
_ intensity in ships of war, 261, 262 
Silver, (fulminating), results of experiments on, 153—157 
Snails, account of an undescribed larva, which preys on, 176—178 
Soda, preparation of the saturated hydro-sulphuret of, 165 
Sodous Acid, analysis of, 381, 382 
Sound, produced by opening a subterraneous gallery, 152. Ex- 
periments on the velocity of, 266 
South (James, Esq.) tables of astronomical phenomena computed 
_ by, from April to June 1824, 77—84. See Herschel 
Stars, observations on the apparent distances. and portions of cer- 
. tain double and triple, 250—253 
Steel, observations and experiments on the developement of mag- 
netical properties in, by percussion, 254, 255. Experiments 
on the elasticity and strength of hard and soft steel, 267, 268. 
Stomach, existence of free muriatic acid in, 181 
Straw-plat, premiums for, 153 ; 
Strychnia, process for obtaining salts of, 170. Volatility of the 
_ salts of, zbed., 171 
Sulphate of copper, an excellent remedy in croup, 181 
Sulphur, action of, on iron, 165 
Sulphurous Acid, liquefaction of, 391 ‘ 
Sulphuretted hydrogen, preparation of, 165. Inflammation of, by 
nitric acid, 380 
Swainson (Wm., Esq.) description by, of two new fresh-water 
shells, 13—-17. On the characters of several new shells be- 
longing to the Linnean Volute, 31—38. Remarks on the pre- 
seut state of conchology, 29, 30 
Tartaro-sulphate of potash, 171 
Taschium, a supposed new metal, notice of, 390 
Taste, organs of, how affected by different bodies, 392, 393 
Taylorian Theorem, demonstration of, 74—76 
Telescopes, on the indistinctness of vision caused in, by the pre- 
sence of false lights ; and remedies for it, 17—28 
Temperature of the sea, at various depths, 126. Effects of tem- 
perature on the intensity of magnetic forces, 279 
Thames, design by Mr. Ware, for making a public road under, 
62—65. Notice of other tunnels, attempted or proposed, 
66—69. 
Thomson (Dr.) table of atomic weights by, 383 
Tiark’s (Dr.) longitude of Madeira and Falmouth determined by, 
270, 271 
Tides, extracts relating to the theory of, 295—315 
