6. These steel punches are not themselves entirely exempted
from the great principle of art. Many of the cavities which exist
in them, such as those in the middle of the punches for the
letters a, b, d, e, g, etc., are produced from other steel
punches in which these parts are in relief.
We have thus traced through six successive stages of copying
the mechanical art of printing from stereotype plates: the
principle of copying contributing in this, as in every other
department of manufacture, to the uniformity and the cheapness of
the work produced.
NOTES:
1. The late Mr Lowry.
2. I posses a lithographic reprint of a page of a table, which
appears, from the from of the type, to have been several years
old.
3. The construction of the engraving becomes evident on examining
it with a lens of sufficient power to show the continuity of the
lines.
4. The Phalaena pardilla, which feeds on the Prunus padus.
5. Some of these weights and measures are calculated from a
statement in the Report of the Committee of the House of Commons
on Printed Cotton Goods; and the widths of the pieces there given
are presumed to be the real widths, not those by which they are
called in the retail shops.
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