STRIKING A LIGHT.

In the new edition of Mason's "Burma" we read that among other uses to

which the bamboo is applied, not the least useful is that of producing

fire by friction. For this purpose a joint of thoroughly dry bamboo is

selected, about 1½ inches in diameter, and this joint is then split in

halves. A ball is now prepared by scraping off shavings from a

perfectly dry bamboo, and this ball being placed on some firm support,

as a fallen log or piece of rock, one of the above halves is held by

its ends firmly down on it, so that the ball of soft fiber is pressed

with some force against its inner or concave surface. Another man now

takes a piece of bamboo a foot long or less, and shaped with a blunt

edge, something like a paper knife, and commences a sawing motion

backward and forward across the horizontal piece of bamboo, and just

over the spot where the ball of soft fiber is held. The motion is slow

at first, and by degrees a groove is formed, which soon deepens as the

motion increases in quickness. Soon smoke arises, and the motion is

now made as rapid as possible, and by the time the bamboo is cut

through not only smoke but sparks are seen, which soon ignite the

materials of which the ball beneath is composed. The first tender

spark is now carefully blown, and when well alight the ball is

withdrawn, and leaves and other inflammable materials heaped over it,

and a fire secured. This is the only method that I am aware of for

procuring fire by friction in Burma, but on the hills and out of the

way parts, that philosophical toy, the "pyrophorus," is still in use.

This consists[1] of a short joint of a thick woody bamboo, neatly cut,

which forms a cylinder. At the bottom of this a bit of tinder is

placed, and a tightly-fitting piston inserted composed of some hard

wood. The tube being now held in one hand, or firmly supported, the

piston is driven violently down on the tinder by a smart blow from the

hand, with the result of igniting the tinder beneath.

[Footnote 1: It is also made of a solid cylinder of buffalo's

horn, with a central hollow of three-sixteenths of an inch in

diameter and three inches deep burnt into it. The piston, which

fits very tightly in it, is made of iron-wood or some wood

equally hard.]

Another method of obtaining fire by friction from bamboos is thus

described by Captain T.H. Lewin ("Hill Tracts of Chittagong, and the

Dwellers Therein", Calcutta, 1869, p. 83), as practiced in the

Chittagong Hills. The Tipporahs make use of an ingenious device to

obtain fire; they take a piece of dry bamboo, about a foot long, split

it in half, and on its outer round surface cut a nick, or notch, about

an eighth of an inch broad, circling round the semi-circumference of

the bamboo, shallow toward the edges, but deepening in the center

until a minute slit of about a line in breadth pierces the inner

surface of the bamboo fire-stick. Then a flexible strip of bamboo is

taken, about 1½ feet long and an eighth of an inch in breadth, to fit

the circling notch, or groove, in the fire-stick. This slip or band is

rubbed with fine dry sand, and then passed round the fire-stick, on

which the operator stands, a foot on either end. Then the slip,

grasped firmly, an end in each hand, is pulled steadily back and

forth, increasing gradually in pressure and velocity as the smoke

comes. By the time the fire-band snaps with the friction there ought

to appear through the slit in the fire-stick some incandescent dust,

and this placed, smouldering as it is, in a nest of dry bamboo

shavings, can be gently blown into a flame.--_The Gardeners'

Chronicle._

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Scientific American Supplement, No. 508, September 26, 1885 · 第 34 / 73 题