During the Indian mutiny, the rebels pulled down the telegraph-posts which had iron tube sockets fitted to them in order to keep off the white ants. These sockets were taken off, and vents drilled in them. They were then loaded with powder, and charges of slugs made from doubled up and hammered pieces of the telegraph wire. We have seen a piece of common iron gas-pipe, a piece of wood, and a few bits of sheet copper, converted into a very formidable matchlock pistol.

In our Australian boat voyage we had a small 1lb. swivel carronade. We jammed a pole about 6ft. long into the fork of the swivel, and had we met any of the Malay trepang fishers, who go in companies of a hundred or more, we should have made the swivel-bolt fast to the bowsprit just outside the stem of our boat, and, letting the trail rest on the mast thwart, have defended ourselves with heavy charges of musket bullets. Of course the fishers might have been friendly, or, if not, the knowledge that we had a gun would have made them so, and we should not in any case have been the aggressors.

The Zemboureks, or dromedary artillery.

Light guns mounted on dromedaries or camels are valuable for the defence of caravans, &c. The Afghans first used these in an emergency against the Persians. A number of pivoted arquebuses were mounted on the saddles of dromedaries, which were taught to kneel while the pieces were fired from their backs. The Persians, profiting by the lessons of their defeat, also organised a similar force, the guns weighing not more than 75lb. The saddle was originally constructed of two-forked branches connected by wooden bars, and if the gun was slightly overloaded the recoil would injure the fittings, and disturb the animal; but subsequently the saddle was much improved, and wheels were added, so that it might be taken from the animal’s back and used as a field gun. It will be seen that the staff of the bannerol carries a little tent, and this covers the ammunition bags. A skin of water hangs under the belly of the camel. The Persians have sought out with eagerness and perseverance the best form of artillery to be carried on the backs of animals; and, as it seems that dromedaries have been successfully imported into America and Australia, it may be of advantage to know that they are capable of being utilised in this way. Other animals, perhaps oxen, might be trained to carry smaller guns.

Very efficient common case shot can be made by filling empty preserved-meat tins with rifle or pistol balls. A bag of cooper’s iron hoop rivets is a very favourite charge among the South-Sea whalers. Round shot can be made as directed under the head “Lead, and its Uses.”

Grenades and rocket arrows.

Extempore grenades can be made from empty soda-water bottles or old ink jars. On one occasion we made a number from the latter vessels by filling them with a mixture of buck shot and strong sporting powder; stoppers of wood were then fitted by notching the upper ends, and fastening them down with wire, like the corks of champagne bottles, a gimlet hole was then bored in each, and a few inches of quick match put in. When the fuse has been lighted, these vessels are either hurled from the hand or fired from large powerful cross-bows, when they, by exploding in full flight or on the ground, cause no trifling confusion among an undisciplined enemy, a pack of wolves, or a sounder of hog in a cactus brake.

An unarmed merchantman was chased by a pirate galley; she hove to, and pretended to surrender, but two men stood at the gangway with a cask of powder. As soon as the long low open boat came alongside they threw it into her, and the cook, running out of the galley, threw a shovelful of hot coals after it. The ship forged ahead before the smoke had cleared away, and escaped, leaving the desperadoes to their fate.