I have made a great many experiments with different kinds of wood, having procured an assortment of those used by the fancy toy-makers of Tunbridge Wells, and the chippings from botanical gardens. I find what I have heard from savages to be quite true; viz., that it is much more difficult to procure good wood for the "fire-block" than for the drill-stick; any though hard, and dry stick will do for the latter, but the fire-block must be of wood with little grain; of a middle degree of softness; readily inflammable; and, I presume, a good on-conductor of heat; but I do not know if there be much difference, in this latter respect, between woods of the same quality. If it be too hard, the action of the drill-stick will merely dent and polish it; if very soft, it will be worn away before the friction has time to heat it sufficiently: ivy is excellent. I find it not at all difficult to produce smoke (it is much more difficult to produce fire) with a broken fishing-rod, or ramrod, as a drill-stick, and a common wooden pill-box, or tooth-powder box, as a fire-block. Walnut, also, does as a fire-block, and the stock of a gun is of walnut. Deal and mahogany are both worthless for fire-sticks.
It is well so to notch the fire-block, that the wood-dust, as it is formed by the rubbing, should all run into one place: it will then glow with a smouldering heat, ready to burst out into an available flame with a very little fanning, as soon as a degree of heat sufficient to ignite tinder has been attained. Tinder is a great convenience, in ensuring that the fire, once obtained, shall not be lost again; but it is not essential to have it.
There are many ways of rubbing the sticks together, in use among different nations. Those curious in the matter should consult Tylor's 'Early History of Mankind.' But the traveller will not obtain much assistance from these descriptions, as it will be out of his power to obtain fire by any but the simplest of them, on a first trial. He is only likely to succeed at first by working at leisure, with perfectly dry wood. Even savages, who practise the art all their lives, fail to procure fire in very wet weather, when the shelter is bad. Of the plans employed by savages, the simplest is that in use both in South Africa and in Australia.
The Australian blacks use the flower-stem of the grass-tree, which is of a tough pithy nature, and about one inch in diameter. The operation of making the fire is assisted by the use of a little charcoal-powder, which, in Australia, is found on the bark of almost every tree, from the constant passage of grass-fires over the ground. The process is as follows:--One piece of the stick is notched in the middle, fig. 1, and the notch slightly hollowed out; another is roundly pointed at one end. The black fellow, being seated on the ground, holds down one end of the notched stick with each foot, fig. 2, and placing the point of the other stick into the notch, twirls it rapidly and forcibly between the palms of his hands. In doing this his hands gradually slip down the stick, and he has to shift them rapidly up again, which loses time: but two people, seated opposite, can alternately take up the rubbing, and more easily produce fire. A little of the above-mentioned powdered charcoal is dropped into the notch during the operation. In a very few minutes red-hot powdery ashes commence to work up out of the notch, which falling on a small heap of tow, or of dry tow-like bark, or lint, or cotton stuff, is quickly blown into a flame. The Africans carry the drill-stick, which in shape and size is like an arrow, in a quiver with their arrows, and the fire-block--a stick three inches long and one in diameter, of a different wood--as a pendant to their necklace.
A plan more practicable to an unpractised hand is that in use among some of the North American Indians. I copy the illustration of it from Schoolcraft's work upon those people.
One person works the "drill-stick" with a rude bow, and with his other hand holds a piece of stone or of wood above it, both to steady it and to give the requisite pressure--gentle at first, and increasing judiciously up to the critical moment when the fire is on the point of bursting out. Another man puts his hands on the lower piece of wood, the "fire-block," to steady it, and holds a piece of tinder ready to light it as soon as fire is produced. If a serious emergency should occur, it is by no means hopeless to obtain fire after this method. A large party have considerable advantages over only one or two men, because as the work is fatiguing, the men can undertake it in turns; and, again, as considerable knack is required for success, it is much more probable that one man out of many should succeed, than that only one man, taken at hazard, should do so. But the best plan of all for a party of three or more men is for one of them to hold the upper block, another to hold the lower block and the tinder, should there be any, and the third man to cause the drill-stick to rotate. He will effect this best by dispensing with the "bow," and by simply using a string or thong of a yard or four feet long. He makes one or two turns with the string round the drill-stick, and then holding one end of the string in either hand, he saws away with all his force. I believe that a party of three men, furnished with dry wood of an appropriate quality and plenty of string, would surely produce smoke on the first few trials, but that they would fail in producing fire. If, however, they had a couple of hours' leisure to master the knack of working these sticks, I think they would succeed in producing fire before the end of that time. The period of time necessary for a successful operation is from one to three minutes. It is of little use fatiguing yourself with sustaining the exertion for a longer period at a time, unless the wood becomes continuously hotter. As soon as the temperature remains uniform it shows that you have let the opportunity slip; it is then the best economy of effort to desist at once, to rest, to take breath, and recommence with fresh vigour.
Fire by Chemical Means.--It is not in the province of this book to describe the various matches that take fire by dipping them into compositions; and I have already spoken of lucifer-matches in the last section. Only one source of fire remains to be noticed, it is--