When the powder is polished, and separated by means of sieves again into grains of various sizes, it is ready for packing. It is then run into tin or wooden kegs, and is ready for storage in a magazine in a remote part of the grounds. The kegs are made in another part of the grounds, and painted in various colors, each color indicating the kind of powder the keg contains. It is then ready for shipment to the places where it is used. The powder that goes into cartridges for shooting purposes goes to the factories where cartridges are made, the blasting powder goes to the men who sell it, and thus it is carted off the place, and the mills go on making a supply to take its place.
The government powder is made in a general way in the same manner that ordinary powder is made. The chemical ingredients are somewhat different, of course, but it may be said that powder for use in cannons is simply of a finer grade than ordinary powder. It is what is technically known as a "slow" powder. That is, it ignites slowly, and burns more slowly than ordinary powder. Of course to the eye it goes off in a flash, like ordinary powder, but really it is slow in its explosion compared with ordinary powder. The object of this is to secure the full force of the power in the powder, and also to start the projectiles in cannon very slowly in their terrible journey of destruction. By using a slow powder there is less strain on the cannons and less danger of their bursting. There must be as little shock as possible to the cannons, when they contain such a terrible power as an ordinary charge of powder, and it is desirable that all of the powder should be used. Hence the need for "slow" powder. The government powder is packed in small cakes or prisms, with a little hole through the centre. These prisms look like the nuts used on the hubs of big wagons. A lot of them are put together in a package and stowed away in the cannon behind the projectile, and a spark is used to set the charge off.
One soon gets used to danger, and in going through a powder plant it is interesting to watch the men go about their tasks with as little concern apparently as if they were employed in a flour-mill. It is healthy work, aside from its danger, and for that reason it would be difficult to find a sturdier lot of men than those employed at this task. The men saunter about the place as if they preferred that sort of life to any other. In their manner there is no indication that they are oppressed by the possibility that some day they may be blown into bits. Most of them seem to be what are known as fatalists. One must die sometime, and a powder explosion provides a speedy and painless exit. They can get no insurance on their lives, but doubtless they console themselves with the thought that the percentage of the loss of life is small, much smaller than in many other kinds of hazardous employment.
These men may count with reason upon a long life, and a physician is rarely needed by any of them. They live in comfortable homes in the park where they are employed, and seem most contented with their lot. The Du Pont people have fitted up a delightful club-house on the grounds for their employees, and these find existence in their lot in life so attractive that they remain in it year after year, a contented and prosperous set of men.
[A PALM-LEAF FAN.]
BY CAROLINE A. CREEVEY.
When ministers preach sermons they take texts. We will make a text out of a palm-leaf fan.
Palms do not grow around Brooklyn, where I live; but the children of North Carolina, and further south, know their straight slim palmetto-tree, bearing a cluster of large frondlike leaves at the top, as we know a chestnut-tree. Indeed, one of the Southern States is called the Palmetto State, and has a palm-tree in its State emblem.
Small palms may be obtained at a florist's, and are fashionable parlor ornaments. But in a greenhouse they do not grow very large. In hot countries they sometimes reach a height of 150 feet. The bud at the top must not be broken off, else the tree will die; for, unlike Northern trees, palms do not branch, but continue always to grow straight up. As the leaves become old, they drop off, leaving curious scars on the trunk. New leaves grow one at a time from the apex. A maple-tree branches in all directions, and you may pinch off its buds anywhere without interrupting its growth. But it is rare to see a palm with even two branches. Such are called forked palms, referring to old-fashioned two-tined forks. Another curious thing about a palm is that it has no bark. My fan-handle is the natural stem of the leaf, and it has never had more bark than it has now.