INDEX* 
419 
Prussian Blue, manufactured from animal empyreumatic oil, 131. 
Pyrometer for high temperatures, by Mr Daniell, 397*- — results ob- 
tained with it, 398. 
R 
Rangoon, account of, 81. 
Rattlesnake, on the bones of the, 22 7. —account of the habits of one, 401= 
Regulator, account of one for equalising the velocity of machinery, 215= 
Rewards for discoveries in the Arctic Regions, 403. 
Robison, Mr John, on a new method of consuming smoke, 233. 
Rocket apparatus for saving lives in cases of shipwreck, 124. Note. 
Rose, Mr John, on an improved glaze for porcelain, 127. 
Rousts or currents of tide in the Pentland Frith described, 55. 
Royal Society of Edinburgh, proceedings of the, 385. 
Rumker, M. on astronomical observations made on the Continent, 71, 
Rusconi, M. 011 the proteus anguinus, 84. 
Rust, on the prevention of, 233. 
S 
Sabine, Captain, his exertions during the Arctic Expedition, 196= 
— his experiments on the pendulum, 207- 
Salvage Island, on the magnetic action of, 381. 
School of arts in Edinburgh, 234. 
Sedgwick, Reverend A. on the geology of the Lizard, 212. 
Sheep, on the Rocky Mountain ones of the Americans, 138. 
Shipwrecks, on a method of forming a communication with the shore 
in cases of, 124. 
Showcrbath, a new one described, 1 22. 
Sirena Lacertina, 105. Note. 
Smoke, on a new method of consuming, 233. 
Snow and Hail, singular appearance of, 396. 
Snow blindness described, 19I. 
Sonia, account of, 51. 
Sound, on the velocity of, 390. — on the propagation of, in elastic 
fluids, 390. 
Sounds, on the audibility of, in cold climates, 207- — excited in hy- 
drogen gas, 211. 
South Britain, New, on the latitude and longitude of places in, 233. 
Specific Grav. of barley and Scotch bigg, method of measuring it, 1. 73= 
Speech, impediments of, 409- 
Spikenard of the ancients, 230. 
Spring, eruption of one near Ripon, 406. 
Springs, on the temperature of, 29. 
Stain for wood, account of a new one, 128. 
Steam-Boats, on a method of propelling them without wheels, 11 6. 
Steam Boiler , account of the explosion of one at Lochrin, 147. 
Stevenson, Mr R, on the explosion of a steam-boiler at Lochrin distil— 
lery, 147-- — on the history and construction of suspension bridges, 
— his new chain bridge, 252.- — on the strength of iron, 254. 
Succinate o/^ Ammonia, on a fungus found growing in a solution of, 1 64. 
Sulphate of nickel and copper. Dr FyfVs analysis of the, 208 . 
Sulphuret of carbon, on the solution of phosphorus in it, 222 . 
Swona, island of, described, 59. 
Sword fish cast ashore at Kirkbean, 399. 
