The New York herald., 1865-01-22

vcyed IN enouk % In ebeyaneA 1hs n0tU Of
the drum Of the being feis for minute or two an
any person unaccustomed TO suoh enosmous and !
describable din has left the building
Al the Norden Wharf factory another staxe Of oper
tions commenced Here the core y rsesiysd ON lar
reels and is sunk in circular openings which are thu
sa up WITH . Ms'sL M s 70 ss We % may here
in the cOaiing may the more quickly b ma
apparent For twelve hours tho coils Of co
are subject TO electrical tests, their cont
uity being ascertainsd and their complete isolati
proved beyond . doubt Malicious injury TO the core,
would thus be defeated in its purpose by prompt dst
tion and remedy The Joining Of the ends ID, we ne
hardly say about the most delicate operation In the who
cable; and whenever the electrician proclaims fau
transmission OF the current the chances are hundr
70 one that the naw will BE- found in one OF
joints. -f..aN kN
Before being worked into cable with the ten strands
wire and yarn, tbs core Is wrapped in twisted fold
jute which may be Just dsting guishabe in one Of tho
sections that we have already alluded TO- and why
are in some request souvenirs The machinery
which the cable Is twined occupies two floors The cl
ing %schnes are below and they consist Of large whe
raj strands arranged on their margin as 70 manta
relatively stationary position instead OF always keep
their axes pointed TO the centre of motion The strand
convergng upwards towards small opening in the ROD
meet and twisted round the jute-covered core al
form the entire cable which conducted over groov
wheels TO another and very noteworthy department
visit large brewery is recalled by the appearance
place. where platforms lead between huge tanks VIII
would elsewhere be vats. They are eight in numb(
four being round and four oval. The round tanks q
thrty-four feet in diameter, and the oval ones measr
thrtysix feet by twentyseven Their depth is twelI
feet and they intended receptaces for the cabl
which descends into them from the wheels 0verhes|
and is coiled very neatly by manualabo Each tank vi
conveniently hold 140 miles Of the cable but th(
capacity If taxed to the utmost, would bc found great
tnualy falls over the edge Of each tank and percoatj
the coils of cable finds It's way into open space whl
is kept clear in the middle where It rises to level WY
the coil The tests the efficiency OF the protcct|
covering; and the defcately adjusted batteries In u
electricians room into which the ends Of all the cab
led in one bunch, proves the conducting power 70
unnluenced by any penetration from without.
measured force is being continually sent through 81
wires and the least defect in the insulation thus
registered with unfang accuracy even TO its exact d
tance and degree Hitherto the superntcndents Of t
anxious work have been very Fortunate but has SOM
times happened that great length OF cable has had
be uncoiled the defective joint cut out and the wind
made good. An account iS kept Of the daily p1
gress and there six hundred and twenty nil
miles completed on Friday evening, TO which anoti'
twelve miles would have been added by the 81
OF the following short days work 30 that speaking to
raby "by the card, we may state that the number|
miles OF finished wire at this time in the tanks at M0rd
wharf is six hundred and forty one The distance frd
the west coast of Ireland to Trinity Bay Newfoundla
is one thousand six hundred and forty nautical mil{
Two Of the eight tanks are nearly full, and will soon
ready for embarkrtion by the Amethyst and Iris, y
ghosty looking hulks which lie alongside, near u
wharf The decks of these vessels have been knock
about considerably and great part got rid Of to mai
room for tanks in which the cable will be slowed In Y
same manner as at the factory The hulks, when add
will be towed to the Medway where the Great EASTERN
now lying. with three enormous tanks on board, ocd
pyng by comparison with the surrounding bulk 10 iii
space as deceive experienced eyes as 70 their ac
dimensions The Iris and the Amethyst have each y
tanks ON board the diameter of which s somewhat ID
than those at Mordcn wharf, the depth being greatd
They will have to make nine trips 10 get all the oak
alongside the "blg ship
Mr. Canning and Mr. Clifford, under whose control q
operations have been conducted at East Greenwich,
accompany their precious charge on board the Great Ea
ern and will direct the laying Of the cable across the
lanfc Ocean Our statement Of the mileage OF p(
fected cable gives but little idea Of the length OF all Y
materials taken separately. For example, to make
the 800 miles Of cable which, allowing for various CO
tingences will be required TO- 600 miles Of copper WI
are used The insulating material equal TO an aggl
gate length Of miles, the jute being in ten srant
will extend to 23 900 miles, which viii also be the leng
OF the iron wire and each wire is separately
with Ave twists or strands Of yarn, 1876 900 miles Of
latter will be worked into the cable, making together
length OF material which amounts TO 216 800 miles WI
theee figures really signify may be understood BY ref
ence 70 the astronomical fact that the distance Of
uoilea IN that from the earth to the moon.