New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1890-11-24

60, as.n xys built in front of the plate, ex'
tendipe halfway over the sue plates. FOR inc pun
OF taldnc temperatures hole was drilled ten inos
deep on top Of the plate, one ana one-hah ncHes
'''o Go cover the bulb OF the Thermometer.
,o,, urotected with non-conductlng material, long
o'oh % pass through the freezing mixture, was ID
$50 Tho shot remaining In the lower left mana
,,,.s a used as the second point for taking tenl
...,uros The base plug was removed ana
thick wooden plug ftted so the Dso
through the freezing mixture. hoe we
drilled in the plug large enoutn aa.
Che thermometer. The freezing mixture was mauo
nv 10 ana saIt The temperature continued to faii
,,, to- three hours when IL reached 20 degrees
ran,cnbe,h The gun prepared. all the elements
being the same as the preliminary round except .o
Az. ,.,ocitv and pressure were not measured. Inc
nro,octIIe broke UP badly. About one-han the hcaa
remained lmbedded in the plate and backing INC poV
being two inches into the backing. five hise P'eoo
ana numerous smaller pieces wcro picked mp near
.n n,ate A triangular piece Of plate twcnty-sn
Ircbes ecross the top broken oil and thrown
,reutvare feet I'm front Of the plate. wide crack
connected the impact with that OF NO. Oh the
compstitiye test There were two small surface rsha'
cracks two inches long surface crack seventeen
inches long started from No. impact toward
,ha left edge. Numerous other cracks were
made mad from old points Of impact and sew;
srai old cracks were made wider The upper part o.
he ri
5Sht IL 4 TO be noted that, with the exception OF
The two cracks bounding the triangular piece thrown
oat and the one No. q. which were all invited ~
the nont OF impact the injury to the plate was In the
GOD OF former perf0ratOns and according to
rhc results OF the preliminary round were similar 70
those of the round fred when the plate was frozen,
and the conclusion OF the authorities Is that there was
no Indication Of aSa hardness Or brttlenees Que 70
H. lower Temperature. The only point that indl-
Gates such a change IL the breaking up OF me
nroiectile II is well known however, that even Win
Tho Hotter proectcs occasionally poor one Is diS
covered and the experts arc inclined TO REGARD nc
breakinc up as resulting from this cause After tne
results OF the shots reported IL was considered use
legs 70 fire the third soi at the plate again az its
normal temperature unless the plate could De coocu
to a much lower temperature than at the jsst ussi;
II has been recommended by the antio1tlcs VI An
napolis that for the present the point OF hnpact Dc
reserved On the plato and that phys!cM ~ so'
be made OF specimens subjected to difercnt ae.
crees OF cold With such small amount Oh uieNi ~
* expected to reach zero Fahrenheit "ltn ole ~
and salt mixture and a much lower tempcraIule Win
carbOlic acid. II these tests show "a marked Rernd
ncnt change the plate will then be cooled Win cas
boc acid and the third shot fired after II mas ssihed
its normal Temperature. This Is INTENDED 70 dcveoP
the effect after thawing and to ascertain the extent OF
the Influence Of q freezing temperature THIS maj
test will to quiet those VINO are ssposeo 10 des
ton the merit Of the nickel plate under all conoonS
OF magnetism
MILLS WILL RETIRE III NOT ELECTED SENhIoh
Washington Nov. 23.-"The Post" Will say to-mor
49, rova has