tions, 275; Report on Luminous
Meteors, 141.

Glass, Enamelling on, 209.
Glass, Piercing holes in, 88.
Glue, Liquid, recipe for, 113.
Glue; New Marine, 59.

Gold Fields in New Zealand, 241.
Gold in Nova Scotia, 242.
Gold-producing Machinery, 87.
Great Exhibition of 1851, 11.
Green Matter of Leaves under the
Electric Light, 166.

Greenwich Observatory, State of, 260.
Ground-Ice, Phenomena of, 270.
Gulf-stream, Origin of the, 158.
Gun-cotton, Decomposition of, 193.
Gun-metal, New, 17.
Guns, Iron for, 17, 18.

Gunpowder fired by Electricity, 171.
Gutta Percha Floating Bridge, 93.
Gorilla, on thè, 217-223; Doyle, J.
B., 223; Du Chaillu, 218-219; Gray,
Dr., 219, 220, 222; Lankester, Dr.,
219; Owen, Prof. 217, 221; Walker,
Mr. R. B., 222.
Haidinger, Mr., on Meteorites, 141.
Hail, Formation of, 273.

Hair suddenly changing Colour, 214.
Hay's New Marine Glue, 59.
Hay on Target Experiments, 26.
Healthfulness of Fresh Paint, 98.
Hearing with two Ears, 156.

Heat, Radiation and Absorption of,
148.

Heating and Ventilating, New System
of, 100.

Helmholtz, Prof., on the Conservation

of Force in Organic Nature, 152.
Heveone, new Substance, 181.
Hog, Red-River, 224.

Horticultural Society's Gardens, New,
at South Kensington, 237.
Hot Springs of Langarness, 252.
Houses of Parliament Stone, Decay of,
118-123.

Humboldt on the Cumana Earth-
quake, 257.

Hydraulic Press, the, 97

Hydrophobia prevented, 198.
Ice, Manufacture of, 150.
India-rubber Varnish, 111.

Induction Coil, Experiments with, 169.
International Exhibition, Buildings for,
11-14.

Ireland, Silurian Rocks of, 244.
Iron, Cold Rolling, 81.

Iron Construction, Mr. Shields on, 78.
Iron, Manufacture of, 81.
Iron Ships, see Ships.
Iron-Welding in Vacuo, 85.
Kaloscope, the, described, 142.
Kew Observatory, Reports of, 130.
Lace Manufacture, the, 109.
Lens, Panoramic, 144.

Leyden Jar, Prof. Tyndall on, 167.
Light and Heat of the Sun, 133.
Light, Persistent Activity of, 137.
Light and Plants, 234.

Lighting Gas by Electricity, 105.
Lighting Streets, Improved, 105.
Lighting Theatres, New Mode of, 106.
Lightning, Death by, 274.

Lightning Figures, Tomlinson on, 139.
Lime-light, the, 107.

London Main Drainage Works, 92.
Lucifer Matches, Manufacture of, 107.
Lungley's Unsinkable Iron Ships, 48.
Lustre, Sir D. Brewster on, 161.
Magnets, best Form of, 127.
Magnetic Forces, Terrestrial, 126.
Magetic Storm, Great, 129.
Magnetism, Terrestrial, 124.
Mallet, Mr., on Earthquakes, 257.
Manganese, various Oxides of, 189.
Mankind, Age of, 238.

Matteucci on the Torpedo, 165.
Mauve Colours, the, 113.
Measuring Distances by the Telescope,

61.

Mendoza, Great Earthquake in, 255.
Metalloid, New, 186.

Meteor in South Australia, 268.
Meteoric Stones, New Falls, 138.
Meteorites, on, 141.

Meteorology of 1861, 276.

Meteorological Phenomena and Ter-
restrial Magnetism, 261.
Micrometer, Photographic, 146.
Microscope, Binocular, 143.
Mill, Wind and Water, New, 114,
Minimum Thermometers, 160.
Mist, Production of, 269.
Mole, Prof. Owen on the, 225.
Mont Cenis Tunnel, boring the, 91.
Moon and Earthquakes, 258.
Motive Power, New, 64.

National Defences, on the, by Mr.
Bidder, jun., 54-57.
Naval Novelty, 51.

New Zealand Gold-Fields, 241.

Niepce de Saint-Victor on the Persis-
tent Activity of Light, 137.

Nitrate of Silver, New Method of Pre-
paring, 193.

Nitrogen, Dr. Frankland on, 192.
Nova Scotia, Gold in, 242.

Obituary of Eminent Persons, 1861,
279-283.

Observatory, Greenwich, Report of,

260.

Observatory, Kew, Report of, 130.
Ordnance, Rifled, 19.

Organic Nature, Conservation of Force
in, 152-155.

Organization, Molecular Theory of,
Dr. Bennett on, 155.

Owen, Prof., on Fishes, 228; Gorilla,
217, 221; Mole, the, 225.

249.

Phosphoretted Hydrogen, 195.
Phosphorus Experiments, 194.
Photography applied to the Micro-
scope, 148.

Photography, Celestial, 147.
Photozincography in the Ordnance
Survey, 62.

Pier, Southport, Construction of, 60.
Pine Wool, 235.

Planet, New one, discovered, 266.
Planetary System, Le Verrier on, 266.
Plants and Light, 234.
Plants reared by Steam, 76.
Plants, Selective Power of, 234.
Plants, Vital Force in, 234.
Platinum, Prof. Faraday on, 187.
Plesiosaurus from New Zealand, 246.
Pneumatic Dispatch Company, 72.
Portland Breakwater described, 89.
Projectiles, Mr. Lynall Thomas on,
40, 41.

Projectiles, Path of, 151.

Pyronome for Quarry-blasting, 89.
Rabbit-breeding in France, 224.
Radiation and Absorption of Heat,
Professor Tyndall on, 148.
Radiation, Lunar, 149.
Rails, Steel, 65.

Railway-Carriages Safety Signals, 66.
Railway-Carriages, Warming, 68.
Railway, Metropolitan Subterranean,
69-71.

Railway, New System of, 67.
Railway Station Indicator, 68.

Railways, Street, 67.

Railway, Submarine Tube, across the

British Channel, 68.

Railway Wheels, Iron Tires of, 65.
Rain following the Discharge of Ord-
nance, 272.

Rain on St. Swithin's Day, 269.
Ransome's Silica Process, 119.

Reed, Mr., on Admiralty Iron-cased
Ships, 37.

Resistance of Ships, 50.
Resuscitation of Life, 212.
Retina, Sir D. Brewster on, 145.
Ribbon-Flower at Kew, 236.
Rifle, New, 21.

Rifle, New Breech-loading, 22.
Rifling, New System of, 21.
Roberts's Improved Fire-engine, 102.
Rock Oil, its Geological Relations and
Distribution, 250.

Rocks, Primæval, Sir R. I. Murchison
on, 243.

Royal Society Anniversary, 124.
Rudder, New, 53.

Russell, Mr. Scott, on Armour-plates,
28; "the Fleet of the Future," 31,
32; Steamship Performances, 74;
Wave-line Principle, 49.

Saturn, the Ring of, 267.
Sea, Depth of the, 157.

Sea, the Milky, 158.

Sea, Recent Encroachments of the,

Steam-engine, Stationary, 75.
Steam-gauge, New, 76.
Steam-gun, American, 30.
Steam-hammer, Large, 77.
Steam, Rearing Plants by, 76.
Steam-ship, New, 76.
Steam-ship Performance, 73.
Steel, Cast, 83.

Steel, Manufacture of, 81.
Steel, Puddle, 83.

Steel, Shear, Manufacture of, 82.

Stone Preservative Processes, 118-123.
Stone, best for London buildings, 121.
Street-lighting, Improvement in, 104.
Street Railways, 67.
Subaqueous Work, 89.

Submarine Cables, Report on, 174.
Submarine Railway Tube across the
British Channel, 68.

Sugar, Improved Manufacture of, 203.
Sulphur, Delicate Test for, 187.
Summers, English, 270.

Sun, Age of the heat of the, 134.
Sun, Light and Heat of the, 133.
Surveying Chain, New, 97.
Swithin, St., and Rain, 269.

Tablets, Indestructible, for Street
Names, 63.

Target Experiments at Shoeburyness,

23.

Telegraph Wires, Oxidation of, 174.
Telegraphy, Ocean, Difficulties of, 173.
Temperature of the Air and Soil com-
pared, 160.

Temperature of the Earth's Crust, 128.
Temperatures in 1861, 278.

Tennant, Prof., his description of the
Imperial Crown of England, 258.
Terrestrial Magnetism, on, 124.
Terrestrial Magnetic Forces, 126.
Thames, Improvement of the, 96.
Thermo-electric Currents in Circuits
of one Metal, 162-165.
Thermometers, Minimum, 160.
Thirst on Mont Blanc, 212.
Thomas, Mr. Lynall, on Iron-cased
Ships, 39.

Time-gun, Edinburgh, 23.

Tite, Mr., on the Houses of Parliament
Stone, 118.

Unsinkable Iron Ships, 48.

Varnish, India-rubber, 111.

Ventilating and Heating, New System
of, 100.

Ventilating Chimney-tops, 101.
Vesuvius, Great Eruption of, in Dec.,
1861, 253.

Vivisection, on, 211.

Volcano on the African Coast of the
Red Sea, 255.

Volcanoes, Ammonia from, 255.

Warrior Experiments, 33.

Warrior, Trial of the, 34.

Water, Deepest around the British
Isles, 157.

Water, Freezing of, and Formation of
Hail, 273.

Water as Fuel, 107.

Water, Is it Colourless? 252.

Water, Saline Impurities of, 202.

Water, Spheroidal Condition of, 202.
Water-supply, Barbadoes, 96.
Wave-line Principle, the, 49.
Weather and the Stars, 268.
Weather of the year 1861, 276.
Welded Beams, Bertram's, 86.
Welding Iron in vacuo, 85.
Westminster Bells, the, 84.
Whitworth Gun, the, 21.
Whitworth on Rifled Ordnance, 19.
Woad, Colouring Matter of, 203.
Wood, Machinery for Working, 114.
Wood, Paper from, 115.

Woods, Dr., on Dissociation, 200.
Woods, Dr., his Photographic Micro-
meter, 146.

Woods for Ship-building, 52.
Wool and Flax Fabrics, 109.

Writing, to prevent being effaced, 116.