Engineering Wonders of the World
Volume I
År: 1945
Serie: Engineering Wonders of the World
Sider: 448
UDK: 600 Eng -gl.
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278
ENGINEERING WONDERS OF THE WORLD.
A new cable
This
out-
New
substitution for the
but after forty miles
Fig. 1.—NEW YORK AND NEWFOUNDLAND TELE-
GRAPH STATION. REMOVED AFTER LANDING OF
THE FIRST ATLANTIC CABLE IN 1858.
Cyrus West Field, a retired merchant, who
became enthusiastic on the subject, purchased
Gisborne’s rights, and formed a syndicate for
realizing the latter’s scheme.
A cable eighty-five miles in length was made
in England for connecting up Newfoundland
with Cape Breton, in
carrier pigeon service ;
had been laid, rough
weather brought the
undertaking to an
end.
was thereupon made,
and laid successfully
across the gulf, thus,
with the aid of the
Newfoundland over-
head wire, linking up
St. John’s with Can-
ada and the Ameri-
can land lines,
work was the
come of the
York, Newfoundland,
and London Tele-
graph Company ; and
in view of the fact
that their president
possessed the sole
landing rights for any
cable on the shores of
Newfoundland, their
position in regard to
a transatlantic cable
was naturally a very
strong one—indeed, practically unassailable.
During the foregoing work steady progress
was being made towards the realization of the
idea of connecting up the United Kingdom
with America by telegraph.
Exploring the substantial amount of know-
Ocean Bed.
ledge regarding the bed or
the Atlantic Ocean became available about
this time, resulting from a series of soundings
taken independently by the American and
British navies, revealing what was termed “ a
gently undulating plateau extending the whole
distance between Ireland and British North
America.” The ground was found to shoal
gradually on the Newfoundland side, whilst
rising more rapidly towards the Irish shore.
The soundings were taken with the in-
genious apparatus of Lieutenant. J. M. Brooke,
United States Navy,
which formed the
prototype of all simi-
lar deep-sea sounding
tubes of the present
day.
In this a light iron
rod, C (see Fig. 2),
hollowed at its lower
end, is passed loosely
through a hole in the
centre of a cannon-
ball weight, A, fas-
tened to the line by
a couple of links, LL.
On the bottom being
touched the links re-
verse position, owing
to the weight being
taken off; and the
cannon-ball, or plum-
met, thus set free,
remains on the
ground, leaving the
light tube only to be
drawn up with the
line. In the act of
“grounding,” the open end of the tube presses
into the bottom, a specimen of which is con-
sequently obtained, unless it be rock or
coral.
An oozy bottom was found throughout the
soundings. The specimens brought up to the
surface were shown under the microscope to
consist of the tiny shells of animalcula (Fig.
3). No sand or gravel being discovered on the
ocean bed, it was concluded that no currents
I