Mercury, 166 Observatorgian, Oil, palm, o purify, 234 cotton-seed, for watch pivots, 272 -, olive, 196 Olefiant gas, 196245 sustofub to sudatex Organ, ancient steam, 2209 * Oxygen gas, experiments with the flame of, Pacific, map of magnetic co-variation lines Pacificator, Mr. Toplis's, 384 Paddle-wheels, result of experiments with Paddles, sail worked, 399 Palace, new, at Pimlico, triumphal arch at Metal, manufactures in, Treatise on (Cabi Pallas, the planet, 15 net Cyclopædia), 125 Metals, fusion of, 333, 352 Mint, Royal, mode of engraving and multi- Monument, Duke of York's, 305, 331, 447 Moule's Essay on Roman Villas, &c., 151 Mushrooms, poisonous, 396 Murray, Mr. John, his experiments on Paper, Chinese, 59 Paper-making, 367; new materials for, 426 Parallel motion, substitute for, 105 350, 357 English and American, 224 Paul's, St., Cathedral, 311, 331 Pencils, Mordan's ever-pointed, improved, 286 Persia, Fraser's Historical and Descriptive Perspective, isometrical, 186, 203 Phosphorus, experiments with, 140, 196, 252 Piano-fortes, tuning, 384 Pistons, Barton's and Heatons' metallic, 134, 176, 216, 228, 258, 4478 Plane-table, mode of using, 443 Planes, inclined, on working, 50, 225, 342 Platina found in France, 234 Ploughing-match at Aylesbury,0283 tas motyvi Polyzonal lenses for light-houses, 58 idontal $803, 106 Obelisk of Luxor, its tranportation to Paris, city of, 227 01 Prow Isonballes tot wee a'ani? hunting, 240 -, sleepers, slate, 288 Whiston branch, on the undulating principle, 327, 336, 381 Selby and Hull, 336 Dublin and Kingstown, 240, 401 viaduct, American, 434 carriages propelled by differential- pulley, 3, 106 286 Snowdon's, 177 improved, 282 Railways, American, 448 Reflector frame for light-houses, Stevenson's, Regent's canal, proposed conversion of, into Register, distance, for carriages, 50 Rice, Mr. Spring, on the influence of know- Ring, electro-magnetic, 114, 191, 272, 329, Rogers's comb-cutting machine, 97 Roman villas and architecture, 151 obelisks, 242 Rosette, Child's universal, 209 Rosser, Archibald, Esq., letters by, on chil Royal Society, Transactions of, 204 Russia leather, how manufactured, 173 matting, a good material for paper, 42 S. Safety-lamp, Davy's, 328, 348, 380 96, 333 Saw, circular, for cutting trees, 68 for cylindrical work, King's, 110 Scaife's system of stenography, 224 Scales of measurement, discrepancies in, 192, Science, Arcana of, for 1834, 108 Scientific honours, 160, 192 Scissors, manufacture of, 318 Screws, universal tool for cutting outside, 37 446 Sea, encroachments of the, 429 Seaward, Messrs., on steam-communication Selby and Hull railway, 336 Sextant, box, mode of taking altitudes and Sewers, Cuff's improved mode of cleansing, 11 Sheerness dock-yard, 304 Ship-building, Ballingall's system of, 192 Shoes, creaking, 175, 285 Silvering, glass, Farrow's machine for, 1 Simms's Treatise on Mathematical Instru- Wax, simple mode of extracting, from honey. Weaving, number of persons engaged in, 116 Wedd's lecture on ancient and modern legis- Wedge-fid, screw, 88 Weekes' portable eudiometer, 161 Wells', Rev. A., lecture by, on animal in- Wheel-cutting-engine, improved, 321 for locomotive carriages, 264, 286 paddle, 191, 399 Whitelaw, Mr. James; simplification of Wind, force of, on flag-staffs, 63 -, carriage moved by, 137 Witty, Wm. Esq.; hydraulic projector, 3; Wootz steel, 205 Y. Yates and Smith's steam-carriage, 239 Z. Zealand, New, flax, 316 Zinc-plate, foreign, 135 Mosselman's, 320 Zodiacal maps, on the construction of, 339 |