4 
MINUTES OE PEOCEEDINGS OP 
Tempered Steel. 
Annealed Steel. 
No. 
Nominal 
thickness. 
Weight. 
No. 
Nominal 
thickness. 
Weight. 
inch. 
lbs. oz. 
inch. 
lbs. oz. 
1 
TO 
36 8 
6 
i 
38 0 
2 
tV 
29 0 
7 
~10 
33 0 
3 
1 
16 
28 8 
8 
-20 
29 0 
4 
tV 
32 14 
9 
tV 
35 8 
5 
i 
39 12 
10 
-T2 
27 4 
Nos. 1, 2, 3, taken singly, were each penetrated at 50 yds. 
Nos. 1 and 3, weighing together 8*12 lbs. per square foot, were then 
placed together on the ground, upright, resting against the stand; four 
shots were tired at them, three of which passed through first and dinted 
second, and one hit an old shot mark and passed through both plates. 
Nos. 2 and 3, weighing together 7*19 lbs. per square foot, were then 
placed behind each other, leaving an interval of 1 in. at the top, gradually 
increasing to 2 in. at bottom ; five shots were fired at them, three of which 
passed through first and dinted second; one passed through both, and one 
lodged in first and cracked the second. 
Nos. 6, 7, and 8, weighing together 12 50 lbs. per square foot, were, 
placed upright in a line against the stand on the ground; three shots 
were fired at them at 50 yds. distance; all passed through. 
Nos. 6 and 7, weighing together 8‘891bs. per square foot, were then 
placed so as to overlap No. 8; four shots were fired at them; all passed 
through the first and dinted second. 
The stand was moved up to 25 yds., when three more shots were fired; 
two passed through first, indented and cracked the second considerably. 
The stand was moved up to 10 yds.; five more shots were fired at them, 
when three passed through both, and two through first and dinted second 
plate. 
Nos. 9 and 10, weighing together 7’84 lbs. per square foot, were placed 
upright in a line, r against a stand on the ground; two shots were fired at them 
at 50 yds.; both passed through. 
No. 9, weighing 4‘44lbs. per square foot, was placed in front of No. 10, 
touching at top, but gradually separating downwards; five shots were fired at 
them, three of which passed through first and dinted second, and two passed 
through first and lodged in second. 
No. 10, weighing 3*41 lbs. per square foot, was then placed in front of 
No. 9, reversing the order; five shots were fired at them; four of which 
passed through first and lodged in second, and one passed through first and 
dinted second. 
Nos. 10 and 4, weighing together 7‘52 lbs. per square foot, were then 
placed behind each other, leaving an interval of about 1 in. No. 10 in 
front, five shots were fired at them; all passed through first; two lodged 
in second; two dinted second, and one cracked second. 
