Iron
Iron is one of the commonest, and so cheapest, of all the metals;
and this is a good thing, for it is the most use ful. It is very hard
and storng, and with the proper machinery, easily worked. Its chief
fault is that it quickly rusts when it is exposed To water or damp air,
unless it is kept always Polished or covered with plant.
Like other metals, iron is found in certain kinds of rocks, and has to be
got out of the earth by mining.
The iron mixed with rock in its natural state, is
Called iron ore. The iron ore is frist crushed and then
Put in to very hot furnaces, until the iron is melted
Out of the rock. It then flows out of the furnace as a white hot liquid, into
moulds, where it is left to cool. When it is cold it is very hard, but also
brittle. (That is, easily broken). In this state it is called cast-
Iron or pig-iron
Tobacco
Tobacco -smoking is a very common habit
In most countries. In European people smoke
Pipes, cigars and cigarettes.
Some people think that tobacco –smoking
Is a bad and unhealthy habit no doubt heavy?
Smoking does harm, and any smoking is bad
For children. But moderate smoking does not
Burt grown men; and it soothes the nerves.
The tobacco e smoke is the dried leaves of
The tobacco plant. This plant is grown in
Many warm countries, such as parts of America.
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