482 
ARMOUR-PIERCING PROJECTILES. 
The result of a was as follows 
Order of 
merit. Maker. 
Nature of shell. 
1. 
Cammell. 
. Cast steel-chilled head ... 
2. 
Whitworth .. 
3. 
E.L. 
. Chilled . 
4. 
Cammell. 
. Cast steel-chilled head ... 
5. 
E.L. 
. Chilled . 
6. 
Cammell. 
. Cast steel-chilled head ... 
7. 
Whitworth.. 
8. 
Cammell. 
Cast steel-chilled head ... 
9. 
Whitworth .. 
Form of head. 
Special No. 1 (sharp point). 
Head 2*0 diameters. 
u 2-0 
i/ 2*0 u 
n 1'5 a 
Special No. 2 (truncated point). 
Head 1*5 diameters. 
„ 1*5 
Flat head. 
In each nature of shell those with the most pointed head were the 
best, the order of merit being assigned according to the depth of the 
indent made. 
The flat-headed Whitworth shell was most unsatisfactory, though 
fired at 2 x 10 ins. of iron, instead of a solid 12-in. plate, as were the 
the other shells. 
There were no available plates for the trial of the shells with heads 
of 2*5 and 3*0 diameters. 
So far the merits of the respective materials stood very much where 
they did in the earlier experiments. One Whitworth and one Cammell 
shell were practically perfect after hitting the target with a velocity of 
more than 1500 f.s., and making indents of 15*3 ins. and 17*92 ins. 
(shell lodged in plate) respectively. The Whitworth had a head of 2*0 
diameters, and the Cammell a head of special No. 1 pattern. 
The result of b was as follows :— 
1. When line of fire was at an angle of 37° 4' to the normal to the 
plate. 
Order of 
merit. 
Shell. 
Head. 
1 . 
E.L. 
2. 
Whitworth . 
. 2-0 
3. 
II . 
. 1*5 
4. 
E.L. 
. 1*5 
2. When line of fire was at an angle of from 29° 30' to 31° 30' to 
the normal to the plate. 
Order of 
merit. 
Shell. 
Head. 
1. 
E.L....,. 
2. 
0 . 
. 1-5 
3. 
Cammell . 
. 1*5 
4. 
Whitworth . 
. 1-5 
5. 
B.L. 
. 2-5 
6. 
WEitworth . 
. Elat. 
7. 
Cammell . 
8. 
E.L. 
9. 
Whitworth . 
. 2-0 
10. 
Cammell . 
. 2-0 
11. 
a . 
12. 
13. 
