“I say!—I say!” shouted the smith. “Bring it to me.”
“Keep yourself to yourself,” said Mark loftily.
Boys indeed! The smith swore, and it sounded in his broad deep chest like the noise of the draught up the furnace. He was angry with himself—he thought he had lost half-a-crown, at least, by just swishing the stick up and down. If you want half-a-crown, you must control your feelings.
Mark told Bevis what the smith had said, and they went to work, and the same evening filed off the end of the rod Mark had bought. Bevis’s plan was to file this till it almost fitted the tube, but not quite. Then he meant to make the tube red-hot—almost white—and insert the little block. He knew that heat would cause the tube to slightly enlarge, so that the block being cold could be driven in; then as the tube cooled it would shrink in and hold it tight, so that none of the gas of the powder could escape.
The block was to be driven in nearly half an inch below the rim; the rim was to be next made quite white-hot, and in that state hammered over till it met in the centre, and overlapped a little. Again made white-hot, the overlapping (like the paper of a paper tube doubled in) was to be hammered and solidly welded together. The breech would then be firmly closed, and there would not be the slightest chance of its blowing out. This was his own idea, and he explained it to Mark.
They had now to decide how long the barrel should be: they had bought rather more tube than they wanted. Five, or even four feet would be so long, the gun would be inconvenient to handle, though with a rest, and very heavy. In a barrel properly built up, the thickness gradually decreases from the breech to the muzzle, so that as the greatest weight is nearest the shoulder the gun balances. But this iron tube was the same thickness from one end to the other, and in consequence, when held up horizontally, it seemed very heavy at the farther extremity.
Yet they wanted a long barrel, else it would not be like a proper matchlock. Finally, they fixed on forty inches, which would be long, but not too long; with a barrel of three feet four inches they ought, they considered, to be able to kill at a great distance. Adding the stock, say fifteen inches, the total length would be four feet seven.
Next morning, taking their tools and a portable vice in a flag-basket, as they often did to the boat, they made a détour and went to John Young’s cottage. On the door-step there sat a little girl without shoes or stockings; her ragged frock was open at her neck. At first, she looked about twelve years old, as the original impression of age is derived from height and size. In a minute or two she grew older, and was not less than fourteen. The rest of the family were in the fields at work, Loo had been left to wait upon them. Already she had a huge fire burning on the hearth, which was of brick; the floor too was brick. With the door wide open they could hardly stand the heat till the flames had fallen. Bevis did not want so much flame; embers are best to make iron hot. Taking off their jackets they set to work, put the tube in the fire, arranged the anvil, screwed the vice to the deal table, which, though quite clean, was varnished with grease that had sunk into the wood, selected the hammer which they thought would suit, and told Loo to fetch them her father’s hedging-gloves.
These are made of thick leather, and Mark thought he could hold the tube better with them, as it would be warm from one end to the other. The little block of iron, to form the breech, was filed smooth, so as to just not fit the tube. When the tube was nearly white-hot, Mark put on the leather gloves, seized and placed the colder end on the anvil, standing the tube with the glowing end upwards.
Bevis took the iron block, or breech-piece, with his pincers, inserted it in the white-hot tube, and drove it down with a smart tap. Some scale fell off and dropped on Mark’s shirt-sleeve, burning little holes through to his skin. He drew his breath between his teeth, so sudden and keen was the pain of the sparks, but did not flinch. Bevis hastily threw his jacket over Mark’s arms, and then gave the block three more taps, till it was flush with the top of the tube.