The sun. [volume] (New York [N.Y.]) 1833-1916, 1892-09-26

keeping out the best proiactiles by armor with
a face capable Of breaking them IN. We only
hope that tho English results ma be shown to
he capable Of r~ivalling them"
That this praise is we'll deserved will be nd
mittcd on recalling that in tho two trials each
target consisted of n nickcl-steel Harveycd
I'lato otthc standard Dimensions. 8 feet high by
u feet wide AMI TO-: inches thick. with n suit
able wood backing. Each received five rounds
from an S-inch, high power. navy brcech-load-
ing rifle OF 81 calibrcs. All tho proiectilos were
S-inch 1lolt2er armor-picrcinS. steel
shells. and each was propelled with a striking
velocity OF !. Z y feet poc second. The ag.re-
gate energy OF the five shots striking each plate
was 25.O4U foot tons. These figures will show
the tremendous severity OF the tests. as COM
pared with those customary on European
proving grounds. while they ~eciipse those Of
OF Iis;or a.'":s !I"e the ,rst tot Of The h,s'fs r n"S S c"ms
pound Plate; hardened by the T%residdrr
'H; riIrShSI nr" nn.,i IL t wrrs used, ans, nnd t ySar; out Sh Of
the five were MOI ste H.
The nlate tried at Indian Head broke three
= the rear surface OF, the plate. neither Of
f GM. na got sr in,2 IN mi ihs w rinte s1 "hd HAT T wss IN T ISs
riSht.hnnd unper corner. an did not destroy
its effectiveness as a protection. hcmarkalls
later IVA similar plate tested At south Bethle~-
hem. The trial was made there beruuSe this
Plato had unfortunately received IN the manu-
p""itnh"l nj the Ordnance Pu.pau that they
might lead 1" disaster nj. the firing tests. As
IL matter" Of tact. tl:e% hal n" observation-disclosures
effect Whatever. an! all Nv rrolectiles. al.
tioug! Of f!1l,z"r'> latest make. were smashed
IN. will, only n few inches of penetration.
The lin,r in this second trial showed no crack
ing what,'vc. from the impact Of the rroloc;
tiles. The result which must have surprised
British ordnance circles Is the disaster to tho
Hotter IrnI"rtiles. which are Of the highest
excellence. and OF which. nevertheless. eight
Tho only difference h-twee ! these two plates
was that the ono. tried ut Indian Head was
lharrryizr! 1T its final thickness, of TO-.
thickness OF II inches. and was then forged
down TO ~; srr,adins ont tho Harveyized
There are some additional POINTS of interest
relating to th"s" trials. For a lVt.-inch plate
the N"lority stimulated in the present contracts
a arm ' or' ,]i"rc Gin s sh"iI IS nsc,l. T Is "nIy an =, III si' feet
nor second. Tho lowest. premium. above the
contract lricc is .nrncd by l.GSl feet per
second. and TIL" middle premium by 1881 feet
second. which vas actually used. Is the con-
trac; acceptance velocity for l3,3-inch plate:
yet. ms has been senn.a lO's;inch plate with
stood 1t in tho Bethlehem trial.
tn" %rcsni'. in h,rirf. has been the definite
ndoptiO: OF the Harvey process for all Of the
%siinrl"r shapes of he armor Of our war ships.
Any further, cNrrrimcnts will DO only as to
The increased nvuincrahili:y which has been
secured ~ this method Of hardening will al
low H. trn"r OF THO tattl" Sllirs to be reduced
he - saving in tho four great vessels Of ur-
ward az hal u million. aud Herewith their
coal-rirrying cararity could be increased md
chief COMPLAINT made against tlism has been
that o! deficiency IN their steaminG radius.