The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1858-03-08

wtier in fec. with much moro ease. Under proper
did not exh bit the slightest tendency "
knk and when subjected 10 tae strain the cleo
tical conductor always true 70 is function. wbso
the fracture occurred m strength tested by alta hing
piece Of weighing hundred and ATTY ponnds b,
iergth Of hres m'es aud towing After the sho for
eight hours this weight dragged through the
water the shp gorg At the rate Of about nine miles per
hour, and there s no snrFDg how much longer might
have bed ba4 IL Dot been cut During this tsus that
piece Of iron must have been kicking up . tremendous
Iumpus on the telegraph plateau, II plunged and
Knocked about in ts nine mile rate along the bottom
No change Will oe made In the cable, as IA not posi-
Bile now 70 suggest any Improvement in t. In the next
expedition therefore The same cable with an additional
eight or pine hundred miles-makiDg thr g thousand
mhes ahogether-- be used sgaiu As hc distance be
tween Vaepta Ireland, and Trinity Bay, New'ounfitud
is 6S4 miles, ,s will give surplus OF than four
teen hundred miles the actual length required This
considered amply sufficient 10 make mp for the exces
sve expenditure Of cable that may in Of
rsyng out and we have n, doubt that when the work
hundi ed miles of cable rem aiuing.
THE CABLE SHIPS.
When the Niagara arrived in the Thames last May
feared Of what called her "pecular
construction that shc unsuted for the reception
laying Of the cable and may be remembered tha,
proposed TO substitute the st. Jean dAcre British
propeller Of l0l guns oontended that there
not sufficient space any part Of her hold for cong
IT, ana that To divide into separate coils would greatly
ing out But all these objections were overcome, and
round proper examination Of the vessel that
was not only large enough but that there abundance
Of space 70 spare Still asserted that coil
better although the advantage derived from the distrbu
ton Of weight by dividing the cable into four Ave parts
obvious The only objection which could be urged
with any against this plan that based
the supposed difficulty to be encountered in the
change Of the cable from one coil 70 another
but which proved by actual demonstration In the
paying out process 10 be difficulty at al The great
advantage in fact which the Niagara possesses other
bar kAw~ -
is considered, s ia the much greater height between
decks while her steadnsss may be partially attributed
It's division and distribution INTO many coils. This has
been mace 80 apparent that in the cong of the cable
board the Agamemnon hereafter II will be divided in the
manner. So lar then, s proved that the argu-
ments which were used in opposition 10 the employ ment
Of the Niagara were unsupported by the facts This
not all however for those who had opposed her al rst
became afterwards her warrnest admirers, and now
firmly believe that she better fitted for the work than
other vessel. All The Captains officers and Of
telegraph squadron have borne testimony to her e
cepcy and the admirable which she has worked
during the post critical moments For shoie hour and
three quarters ehe kept in the holding by
hawssr while the shore end OF the cable being
spiced Il is well 10 state here that the Agamemnoo
considered one OF the best ships In the British navy
perhaps better fitted for this peculiar work than any
that could have been selected Speaking OF our vessel
IN hi Journal OF the expedition, Capt Vain wright, Of the
fopold says, the Niagars a. without exception the stes
dies ship ever saw" This is as has ben already stated
the testimony OF every in the telegraph squadron
The friends Of the late Mr. Steers viii be pleased
Of ths Of the high estimation which this his last
and greatest work held the other side Of the water
notwithstanding the prejudice with which she was at
first regarded.
THE ELECTRICAL CONTINUITY.
II feared that In consequence Of the strain which
at times brought upon the cable, the continuity
electrical connection would have been destroyed but
curing the laying Of the whole 34 miles the conductor
NAMED perfect At time for two hours and half no
signal received through the cable, and the
could not be explained generally be ieved that the
continuity bad ceased the fracture Of
or conductor and everything had been prepared for the
winding in Of the cable with the view CT discovering the
fractured part when, suddenly and unexpectedly
found that the continuity, which apparently broken,
was restored and that the signals were passing
through the conductor. II Was also found that
The electrical character OF the cable improved by It's
submersop In the great depths and that Il
queny worked With much greater and saiis-
factory results Now is known that tho insulating quail
ties Of gutia percha more perfectly developed
temperature Of forty two degrees and that Of the water
on the plateau about tue same, the result which
have referred 10 s thus accounted for. II s indeed
vel AscertAned fact that high temperature nterferes
gutta perchs Affected the the electrical cur
rent becomes Tois fact became painfully apparen,
during experiment which Dr. whltehouse max
ing on the cable ~ lay In the vas Of the factory
Greenwich that he the point Of condemnng
raj miles Of as useless Tho dpcovery Of the cause OF
this-thst the effect Of heat upon the cabeoccured
70 such aremsrkAble way hat y particularly deserving
OF mention here. II vas intensely warm day on
which the experiment made and the rays Of the
concentrated with such force the tarred cable
TO increase us temperature to hundred and twenty
@ the insulating power q the su... psros. 80
70 lead the doctor 70 the belief that II had become
vsueess ~ conductor. soon after, however the sky
became couded the yays Of the longer upon
the cable the temperature OF which gradually fen while
the insulation was improved In prcportonaie degree
Some apprehepsious also felt that terrestrial
magnetism-whch the discoveries Of science tell US ia
always ooursng round the earth In regular circuits
would interfere with The perfect WORKING Of the conductor
by lis scion upon H. but, however might upon the
whole cable extended the telegraph plateau
certainly did not anccrthe 334 mles which laid
far could he asc,rtaned-nor thcre any reason IN
suppose that would have any influence tho whole II
II had upon part. This, considering - doubts
tha, entertained Upon the subject, dsAsAy ono
Of the moot gratifying results Of The late ssSeSon Ia
the face Of these facts New York paper inxS nat After
,hs continuity was los. ressossd up the
moment when the caoe parted In the whole expedition
there point which satisfactorily proved
than this and any assertion 70 the contrary shows The
most stupid or wilfu ignorance Of the crcumsaaces
THE CURRENTS.
sreat deal has been said about The currents and
much misspprehenson exists with regard 10 The part
which they were supposed 10 play in the
laying Of the great submarine cable. II Is be
heved, contrary to the assertion Of those who
ought 10 knov-contrsry 70 the facts established
by Lieutenant Berry man, OF the United States steamer
Arcnc and esienani Daymsn, Of her hajesys steamer
Cyeops thai the whole bed Of the between the
proposed points Of connection in Ireland All Newfouud
And was swept by currents and that despite the
roversibe evidence which both hese distinguished on
GERS have brought up from the great plaesu--from
depth Of two thousand fatbcmshe water that plateau
In perpetual motion Once for all, let be for
sLu rehei o muse VINO are YET nervous
upon this point thai there the great depths
and that the only current which perceived
shallow current which almost always found the
face, and which is crcatec by the winds mis- however
had no eject upon the ship except when going
the reduced rate ofw or three miles hour and only
anords another psument in support of what has been
already stated favor Of increasing speed Eve
PAYING ouT IN THR eRxAr DErTHs.
nsa peculiarly gratifying fact that the cable can bo
laid with much case ami safety In two thousand "A IL
can in four hundred fstbom water and that the
depth had been successfully reached before the fracture
occurred There another fact which no lees sraafy.
ing, that what according N the soundngs Of both Lieu
tenants Dsyman and Beryman appeared 10 be the most
abrupt and steepert dccviiy tho whole plateau