The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1858-08-19

receiving Signals through the sbs from skin
W ship, during the process o. psypg ont. rhis
has been devised by Mr. Laws and xr. Do Salty
the two gentlemen who have charge Of tire electrical de-
par'ment on board this ship. I; a'rp'e1 By a.,
directors Of the company and .de order Of Nc B,c
by their minutes OF June T. 1883 I. consists I, sn ex
change Of currents alternately period Or ten
minutes BY each ship, sni which no. only give
sn accurate test Of this continuity ana insulation
or The conducting wire, but also to give certain
signals which may be reani-ed 10 be sca. wien
The ships are far apart For instance, every .sn
miles OF cable payed out sigpalizsd from ship 70
sfp as also the approach 10 snd omentry stop5ass
for splicing, shifting c,ls, &C The electrical apparatus
employed On yard the tso VESSELS 10 no. very comp-
Gated and is simply composed Of testing Instruments
wholly different from tho,e to be used the sransn-
sion Of messages whea tie ends Of the cable shall be
landed.
TIE ele,tr'c current 10 generated ny sand batteries
Consisting Of plates OF zinc and copper about fourteen
square inches each, arranged by pss rhese plates
mmersed in solution Of snphario aid and water mixed
with saw dus for the purpose Of preventing .hs liqri1
from ovefowpg rvo hundred and forty Of these pairs
are In operation of board each ship The ius.ru-
ment used for tending the current thus crea.ed
hrouPn the line ordinary commuasor in the form or
reversing sey by which the operator can WILL send
the ENC or copper current 81 The battery toto the cable
and by 80 doing change the nature Of the sigasls rhe
current next passes through electro ragnetometer
an Instrument very useful for tho purpose Of tes.1g
II ia composed OF electro. magnet, the Az
mature Of which be "frthared or approached by
small screw, to require stronger or welxer Cur
rent to sttrS-th shows the charge every o-rren.
flows into tho cable and the discharge a. IL comes out
Before entering the line the electric current made %
pass through second instrument, called the n.rne GAL
h1
glasgow University OF the directors Of the company
The magnetic needle, which Is placed in the centre Of
coll OF wire, instead Of marking It's deaections az IA
ordinary Rslvsnometers, hiss little mirror nxed No. the
reflection OF which aes smsI spo. OF light according
to the defcctops moving horizontal scale OF whi.a
paper, placed at about eighteen inches from the nsru
ment tsen This insrun. reports accurately the force
OF the currents not only In the sending the
cevipg from the corresponding ship
Besides this gavanometer, the only other usru-
men in circuit when receiving ID the ordinary skvEno1e-
tor usually employed for testing According the .surs
Of the received the needle is DETECTED 70 the
right the len o. point marked zsro the dial xa5
where the needle lie In vertical position when current
10 passing through the coil OF wire surrounding IT, Every
Of the deections read on the gsvanorster az also
the charge and discharge indicated By the mssueons,Ar
carefully recorded that defsc. Of continuity or
insulation occurred might be visible By comparison
those received before.
These all tho instruments 10 the eiectrcs, depart.
ment and ths Isl supded explanation OF their various
uses 20 that the unscientidc understand them.
SECOND DAY-JULY 30.
All through the night the sound Of the machinery
ceased, and the continuity remained perfect At half past
three O'Clock this morning tie ast 1ake Of The forward
spar deck coil began out aud considerable anxiety
manifested regard TO tho change 10 that The for
ward main deck, which Ia Immediately beneath. Every
precsutop however, has been skon TO guard sgAps.
cdeni and by quarter 10 four the agony over; tho
rs, Of the coil has reached the cable
Is going out In splendid style The iEtercst Is
errod 10 the main deck for there nothing further %
attract the attention in tho appearance Of the circle whs
has Just become vacl-nOthiug ba. the thick tar hat
he oOr, The broken coas AID The rings fr
LEADER throvgo which the cable passes before rur-
over the bobblns that lead " Ine machine Yes
IL would 10 wrong 10 say that there "a i.-e
Of interest In this circle, for have We no.
cesssully paid on. all the cable contained, All WAC
doubts we would tad more pleasure IN looking st al
the circles when empty The ease With which The Lle
out OF the ship al this daAnce from the stern ,or
now about two llndred and seventy feet from
that point, calculated 10 infuss conAdea:e MO
every who II, but is after ALI confidence ter.
rty shaken by vague fears OF the future wehsve vs
days to before get into cul.y Bay, add q
that time which in os Suspense, seems % many
years. what may ocsurp We Afraid svsu 20 ,a1x
Of success oen have hopes been blasted By ss-
appointment, the very though; OF The nasnuds Of no
undertaking brings with feeling slmost akin ~ dis
eoursg cement We know tina. lie risk doubled
by the employ mtnt Of two shpi, whle q; sho
same time mus, DO ae<roslsdsed eur chances
Of success are increased oy tdas reducing tho
time half Tnsn, ssAln, 10 running the ds-
between the two pons which s designed 10 con
nect there Is the probability ina. either both vessels
x get Into gale snd 10 that the prospect Of Iy
IN the cable becomes searully dubious Suca sale 10
TIA, VIC have haiGn eight day affair very rs1l
put end 10 the undertaking, ssd still the rorx
appears easy and practicable enough. Follow mo
course Of the cable GU, Of the coil, poscs
ever tho bobbIns, round tie shsavss Of the plyEg
out machine, and tl . goes overheard, and yoI
will be fully impressed win as pfssGicasgIisy. Yet
what Is the reason that all the attempts hitherto
have ailed' you may ssk. Why, three hundred miles
have been submerged not also possible 70 sy ro o.
three thousand. This question which appears very
simple, and which yet rather di ;uIt 10 Il
easy say that The breaking Of he cable caused BY
detective machinery but who able 70 account sx.<,.c-
orly tho break Of continuity which occurred IN Jgss
last after forty miles had been paid out Of both saps1
This which raises the srsvss doubts ia The minds Of
ALL and which makes he r,cst hopeful Apprshensvs
as 10 The result That word continuity mas created moro
uncasipes and anxiety than anything ccusecet with he
work, simply because seemingly bcyood Ne control
Of scientific SKILL and, gone cAnoo; be restored ~
human ingenuity At any momeo, we may hear TIA. >.
he's parted, and sleeping waking, the fear The, VIII
baunn like . nightmare Oh, how long 70 sss that
bleak and barren, but 70 US, desirable coss. than
any hsi mo. Inc gaze Of enrspuret voysxsr wht
would not give 70 be seamrg up towards the bead q
Trinity Bay with the telegraph station 10 fuil veEp HTe
or days veto run al the end Of which time se may
be returning 70 Queenstown, again 10 bring the moss OF
disSter and defeat. But ve musi not think OF defeat
pow-we are bound for Newfoundland, snd provideaee
avors two or three The fsrhst vii zee us on
teripg the bay Of New York. after having SUCCESSFULLY a.,
com pkhed The greatest work ever undertaken By man.
Bul let US rec wks, progress 80 nave made during tho
last tventy three hours, FOR twelve O'Clock and
H. afAn