THE ROYAL ARTILLERY INSTITUTION. 
177 
THE FOLLOWING EXPERIMENT WAS CARRIED ON AT SHOEBURYNESS, ON 
4th AUGUST, 1864, TO TEST THE “ SMALL PLATE ” TARGET. 
[COMMUNICATED BY CAPTAIN A. HAEEISON, E.A.] 
The target, 17' 3" x 10', represents the ordinary construction of a wooden 
ship armour-plated, the armour plates being of small area, and secured by 
large “ wood screws.” 
The target is faced with four rows of plates of the following dimensions :— 
Two upper rows . 5' 9" x 2' 7" x 4*75 // . 
Lower rows . 5' 9" x 2' 5" x 5*9". 
The following are the scantlings: frame timbers, 11"; inner planking, 
6"; outside planking, 10". 
The target has deck beams, waterway, and deck planking. 
The wood screws are diameter, and 19" long, penetrating into the 
frame-timbers. 
The total weight of the target proper is 28 tons, 3 cwt. 2 qrs. 13 lbs. 
Eange, 200 yds. 
The guns used in this experiment were as follows:— 
One service 68-pr. smooth-bore muzzle-loading gun. 
One do 7" Armstrong breech-loading rifled gun. 
One 9'22" Armstrong muzzle-loading rifled shunt gun (12 tons). 
One 105" Armstrong muzzle-loading rifled shunt gun. 
The following shot and shell struck the target:— 
From 10*5" gun 
„ 9‘22" gun 
Spherical steel shot, two; total weight, 332 lbs. 
Cylindrical steel shot, one; weight, 297 lbs. 
Cylindrical cast-iron shot, one; weight, 296 lbs. 
Cylindrical steel solid shot, four; total weight, 868 lbs. 
Cylindrical (Palliser’s) chilled cast-iron hollow shot, three; total 
weight, 776 lbs. 
„ 7" breech-load- f Cylindrical steel solid shot, two; total weight, 221 lbs, 
ing gun \ Cylindrical cast-iron solid shot, one; weight. 111 lbs. 
, C Spherical steel solid shot, two; total weight, 146 lbs. 
„ t>o-pr. gun . £ Spherical cast-iron solid shot, one; weight, 66 lbs. 
