Page 174

174       Original Papers: Exhibition of 1851 -Monthly Report. 
nately. The clock will be placed 48 feet below the centre of the dial, motion
being communicated to the hands by means of brass tubes, 11 inches in dia-
meter and about 40 feet in length. The whole will be moved by a series of
powerful electro-magnets, on which are wound about 25,000 feet of copper
wire. 
wo *maller dials, 5-feet in diameter, will be placed on the front of the
gal- 
leriesat ea h end of the building inside, the whole of the dials to be governed
by onependulum, which will be placed among the horological instruments in
the space allotted for their exhibition. In this clock the impulse will be
given 
to the pendulum   by a remontoir escapement, in which an electro-magnet at
each vibration of the pendulum bends a spring to a certain fixed extent,
which 
spring in- unbending communicates the necessary power to continue the vibra-
tions of the pendulum, independent of the variations of the electro-magnets.
MACHINED PAPER-HANGINGS. 
IT is well known that it is at least some dozen years since the cotton and
calico-printers of Manchester first began to print from cylinders, and it
was 
not until within the last four or five years that the paper-stainers applied
the 
same principle to printing papers, of a simple character, in one or two colours.
At the outset their Success was very moderate, being unaccustomed to the
use 
of body colours, abd  unacquainted with their peculiarities and -the best
methods of applying them. Consequently the papers produced were of a very
inferior character and quality, and did not enter into competition with the
block-printed papers. Lately some of the leading printers of the "golden
flock papers," in London, have turned their attention to the use of
the 
machine; and it is most satisfactory and surprising to witness the rapidity
and precision with which papers of six or eight colours are run off, the
whole 
eight colours being printed during the passage of the papers once through
the 
machine. A single machine is capable of printing in one hour 200 pieces of
paper, each 12 yards long, or 1500 pieces equal to 18,000 yards, or 54,000
feet 
per day. The paper upon which the patterns are printed is manufactured in
lengths of 2880 feet each ; these are afterwards cut into 80 pieces, each
12 
yards long. 
As an example of the skill with which this mechanical process is carried
out at the present time, we give a specimen of a machined paper-hanging,
manufactured by the firm of Messrs. John Woollams and Co., and all who 
have observed the progress of this manufacture will agree, that this specimen
shews considerable improvement. 
ExHIBIION OP 1851: MONTHLY REPORT OF PROGRESS. 
LAST month we gave an outline of the general arrangements of the articles
in the building, and the official notice now inserted in the JOURNAL will
fill up 
any details wanting. We may repeat that all foreign articles will be placed
east of the Transept, British articles to the west, the articles from our
Colonies 
being nearest the Transept. We understand that the allotment of places in
the building for each foreign country and each of the thirty Classes of British
articles is completed. Arabia and Persia are at the north-west, and China
at 
the south-west side of the Transept. The United States is at the extreme
east, and will, therefore, be the first country the bulk of the visitors
from the 
metropolis will reach-e 
NORTH. 
CENTRAL TRANBEPT. 
aBti sh cotinle,                ______ dUaitetdte 
h    - in 30 Classes.                                               States.
NORTH.