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Saline River (Arkansas, United States) (search for this): chapter 9
r the reels t t on which the wires are strained. Posts at intervals of 400 yards. All bodies are conductors of electricity; but while in some the degree of conductivity is so great that they are used to convey the electric fluid, others resist the passage of the current to such an extent that they are said to insulate, or confine the fluid to a more favorable medium. The following bodies ad- mit the passage of electricity about in the order written:— Silver.Acids.Oils.Paper. Copper.Saline solutions.Ashes.Feathers Gold.Metallic ores.Phosphorus.Hair or wool. Mercury.Animal fluids.Lime or chalk.Silk. Cadmium.Water.Caoutchouc.Glass. Zinc.Vegetables.Camphor.Wax. Tin.Animals.Porcelain.Sulphur. Iron.Flame.Dry wood.Resin. Lead.Smoke.Gases and air.Amber. Platinum.Vapor.Leather.Paraffine. Carbon.Earths.Lycopodium.Shellac. Graphite.Metallic oxides.Parchment.Gutta-percha. In—tagl′io. Cut in; as of the lines in an engraved plate, the sunken letter in the matrix of a type,<
Schuylkill (Pennsylvania, United States) (search for this): chapter 9
idge over the Tay in Scotland, about 1 1/4 miles west of Dundee, is to be 10,320 feet in length, and to have, commencing on the Fifeshire side, spans as follows: three spans of 60 feet, two of 70, twenty-two of 120, fourteen of 200, sixteen of 120, twenty-five of 66, one of 160, and six of 27 feet. The bridge will thus have eighty-nine spans, and has a hight of about 78 feet above mean high water. The Girard Avenue Bridge, Philadelphia, is shown on the opposite page. It crosses the Schuylkill River at the entrance to the Fairmount Park, and was built by the Phoenixville Bridge Company. The bridge is 100 feet wide; the frame is entirely of iron, the flooring being iron joists covered with corrugated iron plates and asphate concrete, and granite blocks laid in cement. I′ron—cham′ber. (Puddling.) That portion of the puddling — furnace in which the iron is worked. The reverberatory-chamber, charge-chamber. I′ron-clad Ves′sel. One having the exposed portion of th
Aquae Sulis (United Kingdom) (search for this): chapter 9
ed straightening by the foot, while the superior metal of the Romans stood the brunt. Strabo mentions that one of the exports of Britain was iron; the bold islanders met their invaders with scythes, hooks, broadswords, and spears of iron. The arrival of the Romans and the introduction of artificial blast, which the Romans had derived from their Eastern neighbors, gave a great impulse to the iron works of England. Under Adrian, A. D. 120, a fabrica or military forge was established at Bath, in the vicinity of iron and wood. During the Roman occupation of England, some of the richest beds of iron ore were worked, and the debris and cinders yet exist in immense beds to testify to two facts: one, that the amount of material worked was very great; the other, that the plans adopted were wasteful, as it has since been found profitable to work the cinder over again. During the Saxon occupation the furnaces were still in blast, especially in Gloucestershire. The early Norman
England (United Kingdom) (search for this): chapter 9
wen was the first iron vessel with water-tight bulkheads; suggested by C. W. Williams. See bulkhead. Iron vessels for America, Ireland, France, India, and China were built in Scotland and on the Mersey, 1833-39. The iron steam-vessels Nemesis and Phlegethon were used in the villainous Opium War of 1842. They were not the last vessels built on the Clyde for piratical expeditions. The Ironsides was the first iron sailing vessel of any magnitude employed for sea voyages. The Great Britain, built at Liverpool, was the boldest effort in iron shipbuilding in her time, but was eclipsed by the Leviathan, afterwards renamed the Great Eastern, which was built from the designs of Brunel, by Russell & Co., at Millwall, on the Thames. She was commenced in 1853, and was four years in building. The proportions and capacity are as follows: — Length between perpendicular680 feet. Length on upper deck692 feet. Breadth of the hull83 feet. Breadth, including paddle-boxes118 fe
Portsmouth (New Hampshire, United States) (search for this): chapter 9
rolled 15 inches thick, and it is claimed that plates of sound and uniform quality can be rolled 10 inches thick. To resist the attacks of iron-clads the British government is erecting at Spithead two forts, plated with 15-inch iron. Each fort is 700 feet in circumference, 230 feet in height, and is armed with two tiers of guns, one consisting of twenty-four 600-pounders, and the other of twenty-five 400-pounders. The two will command the only deep channel leading from the sea to Portsmouth Harbor. The estimated cost of each fort is about £ 1,000,000 sterling. See armor-plating. Fig. 2703 shows broadside views of a number of English iron-clads, and is introduced to illustrate the modes of arming and of protecting; the shaded portions indicating the partial protection only, afforded in some instances to the battery and engines, and at about the water-line. a shows the Warrior and Black Prince class of 6,039 tons. b, the Achilles, of the same size. c, the Defence an
Chemnitz (Saxony, Germany) (search for this): chapter 9
essing-chamber a′, and by its pressure caused to open the valve and pass out through the compartment g of the head and through the pipe j to the cooler, in which it passes first through the pipes c′, and afterward through the pipes c′, and is thereby cooled. From the cooler the compressed air passes through the pipe m into the compartment n of the back cylinderhead e, whence it passes through the valve o into the expansion-chamber a′ of the cylinder during a porin the hydraulic machine of Chemnitz, Hungary (see page 28), in which air is highly compressed in a closed reservoir under a column of water. If a stop-cock in this reservoir be suddenly opened, the expanding air rushing out produces a degree of cold sufficient to freeze the drops of water which it brings with it into pellets of ice. Machines acting by expansion of air-envelope. Kirk's apparatus (English) was of this character; that is, it absorbed heat by the expansion of air when liberated after compression by suitab
Madeley (United Kingdom) (search for this): chapter 9
lopedia of printing. Inking-roller. Ink′ing-roll′er. (Printing.) A roller which receives the ink from the inking-table and transfers it to the type in hand-press work. In power-presses, several rollers are employed, which are fed with ink from a trough, distributing it and transferring it to the inking-roller. The composition of glue and molasses was invented by Donkin and Bacon (English patent, 1813). It is stated to have been previously used by one Edward Dyas of Madeley, Shropshire, England, who was indebted to an accidental overturning of his glue-pot to the suggestion of using the lump of semi-hardened glue. Francis and Letmate's patent composition, June 21, 1864, consists of glue, 14 pounds; glycerine, 28 pounds; castor-oil, 2 1/4 pounds; borax, 3 ounces; ammonia, 2 ounces; sugar, 7 pounds. The endwise motion of the ink-distributing rollers is in the English patent of Professor Cowper, 1818. The diagonal arrangement of the inking-roller, to give it a re<
Glasgow (United Kingdom) (search for this): chapter 9
ront side of the frame for removing snow. Ice-locomotive. Ice-lo-co-mo′tive. A traction engine for running on ice; one constructed by Messrs. Neilson of Glasgow, and employed for conveying passengers and freight between St. Petersburg and Cronstadt, has two driving-wheels five feet in diameter and studded with spikes. Th I′dle-wheel. See idler. Id′wall-stone. A Welsh oil-stone from Snowdon. Il-lu′mi-na-ted clock. This practice appears to have commenced in Glasgow, Scotland, where a clock with two faces supported at the extremity of a projecting bracket was lighted by jets placed above it, the light of which was reflected upon tonale of the puddling process; and Henry Cort, of Gosport, in 1784, made it practicable, and added grooved rolls, by which the puddled bar was drawn. Neilson, of Glasgow, introduced the hot blast in 1828. Aubulot, in France, in 1811, and Budd, in England, in 1845, heated the blast by the escaping hot gases of the blast-furnace.
Old Camp (Nevada, United States) (search for this): chapter 9
at of Noor Mahal, the favorite queen of Shah Jehan, before you, and beside it her husband's humbler grave. Through within and without the Taj is white, still here you will find the walls profusely jeweled, and the purity retained. Flowers are pictured on every block in mosaic of cinnamon-stone, carnelian, turquoise, emerald, and amethyst; the corridors contain the whole Koran, inlaid in jet-black stone; yet the interior, as a whole, exceeds in chastity the spotlessness of the outer dome. Oriental, it is not barbaric. . . . . In a Persian manuscript there still remains a catalogue of the prices of the gems made use of in the building of the Taj, and of the places from which they came. Among those named are coral from Arabia, sapphires from Moldavia, amethysts from Persia, crystal from China, turquoises from Thibet, diamonds from Bundlecund, and lapis lazuli from Ceylon. The master masons were of Constantinople and Bagdad. The varieties of inlaid work are numerous, and some of t
Saint Petersburg (Pennsylvania, United States) (search for this): chapter 9
ean draft of 23 feet 9 inches. The plates on the ship's sides and on the raised building amidships vary from 12 to 14 inches, and the armor-plate protects the ship to a depth of 6 feet below the water-line. The vessel has no spur, but the upright stem is heavily plated and of enormous strength. The ship has two large turrets, which are plated with 16 inches of iron in two thicknesses of 14 and 2 inches. She has no masts, bat depends entirely on her compound engines, which were built at St. Petersburg. Each engine is of 700 horse-power, and connected with 2 four-bladed screws. There are 12 boilers, which will require at full speed 132 tons of coal in 24 hours; and at this rate of consumption the engines will work at 10,000 effective horse-power, and the ship will be driven at 14 1/2 knots speed per hour. If the engines are worked at the second grade of expansion, she will have coal for 17 days, steaming 12 1/2 to 13 knots per hour. With the single exception of the teak-wood back
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