Page:On the economy of machinery and manufactures - Babbage - 1846.djvu/146

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112
OF COPYING.

Weight of One Square Yard of each of the following Articles.[1]

Description of Goods. Value
per Yard
Measure.
Weight
finished of
One Square
Yard.
Weight of
Cotton used
in making
One Square
Yard.
Caterpillar Veils
Silk Gauze 3-4 wide
Finest Patent Net
Fine Cambric Muslin
6-4ths Jaconet Muslin
Ladies' coloured Muslin Dresses
6-4ths Cambric
9-8ths Calico
1/2-yard Nankeen
s. d.

1 0


2 0
3 0
1 2
0 9
0 8
Troy Grains.
41/3
137
2621/2
551
613
788
972
988
2240
Troy Grains.




670
875
1069
1085
2432

(159.) This enumeration, which is far from complete, of the arts in which copying is the foundation, may be terminated with an example which has long been under the eye of the reader; although few, perhaps, are aware of the number of repeated copyings of which these very pages are the subject.

1. They are copies, by printing, from stereotype plates.

2. These stereotype plates are copied, by the art of casting, from moulds formed of plaster of Paris.

  1. 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.