The New York herald., 1864-05-04

every step Of ~ praos@ e .eS 49, 4. s.rsosrn
a . an snrtsusaDeous aad Hveoestole Nevesopoens
ssa. which v.:S,S % .ss sss - q ~ sss.ssSss
rysdsiD. dess ~ work o. asssr.cs'oa ssssss W
.s = s sss's :,s =. :s,u . .ps. ss 5. - q
ircp which up0s as asown cacuat,on we're c.pAole
Of bearing many ssss % .ss ssrss - tnss - sssHass
dpa these crcsmsssocss hsreS The boiler explodsd
within te n seconds after Captain Filieerown and the
Ser not noticing any unusual pressure when the
very moderate speed Of tho vessel oosween eight and
eows1 IN ssson spoa Inc ssxss ss The Blowers
we're running the fires, and the chief engineer,
.no was position Where ss S .os, not sossrss S me
sns,as had been run partly thro.ed on ana the steam
Sovernor'e Island had up thrlyfonr pounds and
half ~ the Narrows Under thsee circumstances u s
proved that tho engineer have
three things-hcr allowed the 70 exceed tho
limit allowed or opened the furnace 90 M OF opened sns
which be did would seem 10 be free from doubt IN The
lhe nature OF thngs Tho evidence s and i seems TO
be matter Of C0nmon knowledge, that explosions from
low water occur whom the throttle valve opened, 30
As increase the demand for steam upon the boiler,
and al least 70 diminish the pressure, and appa
renty the chances OF explosion and all that
under there the water which yet remain
the boilers rkos into the superheated atmosphere
either by the action oi the fire by deriving Their
heat from the superhcated steam Itself have an
Temperature above that which saturated steam
itself possesses, and which are, therefore, abe 70 yied
OF their surplus heat 10 tho hney divided wator
explosions the who either inpcceaty careessly
produced them longer bear wiin~s earth, and We
must infer probable conduct from the crcums
which they known 70 be placed. and the induce
rnents wi bich operated upon them in this the
gam steam, and Of course Mr.. Cah could have had
other object in accumulatng pressure except TO use
whom accumulated, and 70 find out the capacity Of h
eng,pe when ts powers 70 be tested for the FIRST
time In opening the valve, II he did is, Mr.. Cahil
been diminishing the pressure his boilers
Tho water had been at It's height the opera
ton would have entirely SAFE He himself did
know where the water IN the boilers he had been
with the captain for some time and as il ap
pears skng indicator cards from the engine al place
where he could poss bly, have known the condition OF
the waer IN tho boilers as Mr. Lawton has told US; ard
he had right perhaps infer that the boilers
they should be- and particularly that
had not seen them operate the trial al the dock
their with geats rapidity This brings the
Liberation Of the probability that the bw
qualified, from his knowledge to give any testi
mony 70 the exact condition Of the gauges at
sIantia evidence in this regard also OF that we are
furnished with great abundance, and OF n most con.
elusive character This boiler and engine were used al
the dock for ninety SIX hours during which time the
most extraordinary results were exhibited. The water
worked out OF the boilers into the engine, and
overheard so freely that sometimes over third OF the
ynder would be filed with water, and the momentum
Of the machine would be suddenly arrested Is proved
by Mr. Mason, who had charge OF the trial. On
cason the quantity which suddenly from the
boiler TO the cylinder great that the piston
driven up the piston rod about the sixteenth OF
inch by COMPRISING the between the cylinder
head and the piston, as proved by Mr. Regn. who as
water at the dock was 60 great that the last witness re-
fused TO the throttle valve when requested to do
SO by the United States engineers on board, who re-
presented that the contract required the engine TO be
wide Open The witness said that he considered hts
own safety endangered, and should act on his own
judgment. Mr. Bell, who took indicator diagrams at
times during the trial. from the engine says that
worked out OF the boilers be heard striking
though the engines arranged with q fresh
"surface condenser whose Office il is to keep the
very and had 10 be blown out the engine had
'surface condenser This the condition Of the
Chenango when che was delivered into the charge OF
second assistant engineer with assistants who, ap
pears had witnessed these operations, order
among the engineers who have been examined the
subject that boiler in that condition unsafe, and
required extraordinary skill 70 avert accident and
the question Is whether that extraordinary skill
ployed upon them The young men 10 charge are not
pretended TO have possessed anything than ord
skill in their business their rank shows. In ad
dton these probabilities, thus established, there
other facts which be concealed deceive others
adjusted with the teta zero
which mercury could be expelled until the pressure
BY Mr. Powers the boiler inspector or the city Of Brook
lyn, and by Mr.. Dckerson, the witnesses who examined
Of the s stood sSous % as two ea and
half inches above the zero on the scae while At the
ss e a.
and was found on the end OF the mercury and
curry could have been expelled from this tube unless BY
pressure OF steam than forty eight pounds high
unless between the time Of the explosion and the time Of
The examination In presence this gauge had been
aken down. some OF the mercury poured out, and some
dirty water poured into IT. which possibility is negaved
rg had been touched until II examined 10 our
presence. The hair felt which covered the top Of
black ola and shriveled by excessive heat. sample
OF which e produced before while the wood p imme
told % that steam which supeheated by contact with
hot iron will shrve up animal hbere like hair or leather
while would not yet be hot enough to set FIRE 70 wood
but that saturated steam steam hotter than the
water ont o! which Is made would only be 2se Fab.
hot at the ofory pounds and therefore not hot
enough 70 burn hair This s said 10 prove 10 demon.
straton that the have been superheated
high degree and is admitted that unless the
low effect could have been produced II is also in
evidence before you that the lead covering, which
upon the outside Of the boiler and outside OF the
felt melted by the beat OF the steam: and
have been shown you which were taken from the
sheet lead Immediately at the edge OF the rupture,
and which bear evidence Of having been subjected
9 melting heat. Steam at GOO Fab. viii mel,
lead, and u is said by witnesses that II h common
10 eases OF explosions, and in cases where low
water has been followed by explosion 70 hnd lead
and solder melted by the hot steam. 1t be remarked
that this boiler has been the subject OF an Official exam
nation and report by engineers OF the United States Navy
and hsd been inspected by great numbers Of persons
ncud ne Mr. Martin (whose arrangement OF charged
tempted explain how lead could have been melted
luness indeed the suggestion OF Chief Engineer Sowe
melt i,eelf may be considered explanatory or the
felt charred, unless by superheated eteam; and Mr.
Martin himself remarked that the only evidence Of
low water which he had in the fact burnt
felt, OF which he had picked up sample and then bad
10 n bis pocket II rs apparent that Engineer corps
OF the navy, a well az the persons whore plans
invslved, have deep interest In assigning other
cause than low water since u i were low, II must have
been 70 either from carelessbese OF engineers or
from inherent defects IN the organization which
bafied the ordinary skill Of euch persons had
the machine In charge yet attempt has made
explain away the melted lead 10 reconcile its presence
with the feet that there enough water the boiler
And ~ this the ordinary cauee Of explosion, would
seem consequently the true hereparticulariy
no evidence OF any sort bss been produced TO subst
suggestion wtboW proof that possb the braces might
have been taken out by Mr. Csh and not replaced or
possibly the cod water test which experience
70 be infalios, bas IN this case proven Unor.
,uuatsy there are other facts which point very
clearly The existence OF organic disease ves-
ses recurring the utmoet vigilance 10 guard against