On the other hand, the new method of welding was far less
injurious to the texture of the iron, which was now exposed only
once, instead of three or four times, to the welding heat, so
that the public derived advantage from the superiority, as well
as from the economy of the process. Another process has
subsequently been invented, applicable to the manufacture of a
lighter kind of iron tubes, which can thus be made at a price
which renders their employment very general. They are now to be
found in the shops of all our larger ironmongers, of various
lengths and diameters, with screws cut at each end; and are in
constant use for the conveyance of gas for lighting, or of water
for warming, our houses. 364. Similar examples must have
presented themselves to all those who are familiar with the
details of our manufactories, but these are sufficient to
illustrate one of the results of combinations. It would not,
however, be fair to push the conclusion deduced from these
instances to its extreme limit. Although it is very apparent,
that in the two cases which have been stated, the effects of
combination were permanently injurious to the workman, by almost
immediately placing him in a lower class (with respect to his
wages) than he occupied before; yet they do not prove that all
such combinations have this effect.
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