In using these blanket-boats it will be convenient to lash several together, side by side, upon which soldiers can be transported. The float can be paddled or a rope may be stretched across, supported by floats, and the men can pull themselves across. If used for cavalry, some of the men can hold the bridles of the horses, while the others can pull, paddle, or pole across the stream, the saddles being placed in the boats. The frames are abandoned, or used for fuel, when the army has crossed over.
Several of these boats lashed together, and covered with poles, would form a raft on which wagons could be carried over; but for artillery, rafts of wagon-bodies, or something possessing greater powers of flotation, should be employed. The bill of materials for the frame of a blanket-boat is: 4 end-pieces, 11⁄2 inches round or square, 2 feet 9 inches long; 4 side-pieces, 11⁄2 inches round or square, 3 feet 9 inches long; 30 uprights, 1 inch round or square, 1 foot long; 10 pieces across bottom, 1 inch round or square, 2 feet 9 inches long; 8 double pins, 1⁄2-inch in diameter, 3 inches long; 4 pieces of cord or strong twine, each 9 feet long; 6 pieces of cord or strong twine, each 3 feet long; 1 india-rubber blanket, 6 feet long, 4 feet 9 inches wide, with eyelet holes around all sides, not more than 6 inches apart, and 30 feet of twine to lash the blanket to the frame.
Blanketeers. A number of operators who, on March 30, 1817, met in St. Peter’s Field, near Manchester, England, many of them having blankets, rugs, or great-coats rolled up and fastened to their backs. This was termed the “blanket meeting.” They proceeded to march towards London, but were dispersed by the magistracy. It is stated that their object was to commence a general insurrection. Eventually the ringleaders had an interview with the cabinet ministers, and a better understanding between the working-classes and the government ensued.
Blasting. The displacement of earth or rock by the use of an explosive. One of the most important parts of the art of mining in its various branches of tunneling, shaft-boring, well-digging, submarine mining, etc. The explosive is ordinarily placed in a bore hole, but in submarine mining this is sometimes dispensed with when a high explosive like nitro-glycerine is used.
Blasting Powder. An explosive in the form of powder used for blasting. The most powerful blasting powders in common use are made by adding certain substances to nitro-glycerine, which, by absorbing it, reduce it to the form of powder, and thus render it comparatively safe against the shocks and jars of use. (See Giant Powder, Dynamite.) The term blasting powder is also specially applied to a powder analogous to gunpowder, but which contains sodium nitrate in place of potassium nitrate, or saltpetre.
Blaubeuren. A town of Würtemberg, on the Blau; here the French defeated the Austrians in 1800; the fortress was razed in 1806.
Blayle (anc. Blavia). A fortified seaport of France, in the department of Gironde, 20 miles north-northwest of Bordeaux. The Duchess de Berry was imprisoned in the citadel in 1833. This city was captured by the French, from the English, in 1339; the Protestants took possession of it in 1568, and the English tried in vain to take it in 1814.
Blazonry (from the German Blasen, “to blow”). The art of describing in technical language the objects or charges borne in a coat of arms, and the manner of arranging them on a shield. The term originated from the custom of blowing a trumpet to announce the arrival of a knight, or his entrance into the lists at a joust or tournament. The blast was answered by the heralds, who described aloud and explained the arms borne by the knight.
Blechstreifen, or Blechschienen (Ger.) (Les laisches, Fr.). Thin metal plates which the ancient Gauls placed upon the buff coats of infantry; they were placed between the buff and the lining.
Bleneau. A village of France, in the department of the Yonne, about 29 miles west-southwest of Auxerre, celebrated as the place where Turenne gained a victory over the Prince of Condé in 1652.
Blenheim (Ger. Blindheim). A village of Bavaria, 23 miles north-northwest of Augsburg, memorable in connection with Marlborough’s great victory over the French and Bavarians, August 13, 1704. The battle, though known in English history by the name of “Blenheim,” did not occur here, but at the neighboring village of Hochstädt, by which name it is known to the French and Germans. The French and Bavarian army consisted of 56,000 men, commanded by Tallard, Marsin, and the Elector of Bavaria, and opposed to it was the allied army 52,000 strong, commanded by the Duke of Marlborough and Prince Eugene. The loss of the French and Bavarians was estimated at from 30,000 to 40,000. Near here, also, in 1800, the French defeated the Austrians.
Bleus, Les (i.e. “The Blues”). A name given to the soldiers of the Republic, by the Royalists, during the wars of La Vendée, on account of their uniform.
Blidah. A considerable town of Algeria, on the border of the Metidjah Plain; taken by the French in 1830, and permanently occupied by them since 1838.
Blieskastel. A small town of Rhenish Bavaria; near here, on November 19, 1793, 7000 Prussians and Saxons under Gen. Kalkreuth fought the French, about 20,000 strong, under Gen. Hoche, neither side gaining the victory. The Prussians held their ground without any great loss until dark, when, deeming their position untenable, they evacuated it during the night.
Blindage. A temporary bomb-proof or splinter-proof roofing, constructed of timber and the like, to give cover to magazines, batteries, hospitals, etc. See Blinds.
Blinds. In military affairs, are wooden frames, composed of four pieces, either flat or round, two of which are 6 feet long, and the others 3 or 4 feet, which serve as spars to fasten the two first together: the longest are pointed at both ends, and the two others are fastened towards the extremities of the former, at about 10 or 12 inches. Their use is to fix them either upright, or in a vertical position against the sides of the trenches or sap, to sustain the earth. Their points at the bottom serve to fix them in the earth, and those at the top to hold the fascines that are placed upon them; so that the sap or trench is formed into a kind of covered gallery, to secure the troops from stones and grenades.
Blind-shell. A shell, the bursting charge of which is exploded by the heat of impact. Used in modern ordnance against armor.
Blistered Steel. See Ordnance, Metals for.
Block. See Implements.
Blockade. In military art, is an operation for capturing an enemy’s town or fortress without a bombardment or regular siege. The attacking party throws up works on the neighboring heights and roads, and part of the besieging force remains under cover in villages, or in a temporary camp, ready to repel any sortie attempted by the besieged. The whole purpose in view is to prevent the besieged from receiving supplies of any kind, in order that, when food or ammunition is exhausted, they may be compelled to surrender. Fortresses situated on steep and rocky eminences, difficult to conquer by bombardment