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topographic press, printing in two colors. Vauthier's roller-press is
arranged to work on an endless roll of paper or on sheets fed in as
usual, and prints in six colors. Electro shells are secured in position
on the respective rollers, which are in horizontal series, and the paper
is conducted by tapes to the rollers in succession. The French section
shows a great variety of polychrome, lithographic and zincographic
printing-machines, and also a great number of ordinary job and card
presses, the most interest, however, centring in the large number and
variety of the web perfecting presses for newspapers and for bill-work
where long numbers are required.
France has a right to exemplify the Jacquard in its fulness, for it is
hers. The original machine of Vaucanson and that of Jacquard are in the
Conservatoire des Arts et Metiers, as well as a long series of
exemplifications of successive improvements. The Grand Maison de Blanc
of Paris has a large one, making an immense linen cloth of damask
figures, all in white, and representing what I took at first to be an
allegorical picture of all the nations bringing their gifts to the
Exposition. I found afterward that it was called _Fees du Dessert_. It
is about three metres wide, and just as long as you please to make it,
but the pattern is repeated every five metres. The design, on paper, is
hung against the wall, and is twelve by eight metres, all laid off in
squares of twelve millimetres, and these again into smaller ones exactly
a square millimetre in size. The number of small squares on the sheet of
paper is ninety-six million, which represents the number of the
intersections of the warp and woof in the pattern. There are nine
thousand and sixty-six perforated cards in the Jacquard arrangement for
floating the threads which form the damask pattern, and the whole
machine stands on a space of about twenty by twelve feet and is eighteen
feet high. It is worked by one man, without steam-power, the shifting of
the harness being done by two foot-levers and the shuttle thrown by a
pull-cord.
We may here observe the looms that weave the marvellously fine silk
gauzes realizing such fanciful Indian names as "morning mist," which
poetically express the lightness of a web that when spread upon the
grass is not visible unless one stoops down and examines closely. To
even name the various looms here would be to make a list of ribbons,
velvets, cloths and other tissues. The subs
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