100 
ARMOUR AND ITS ATTACK BY ORDNANCE. 
Movable 
shielded 
mountings. 
Fig. 22 is the movable shielded mounting for the 5’7 cm (2'24-inch) 
Fig. 22. 
25-calibre quick-fire gun, weighing in all 2'85 tons, which was driven 
about the ground with three horses and a detachment of eight men, 
and put into position in a pit dug by the gnn detachment (see Fig. 23.) 
The sheet-iron sides of the chamber are covered by the walls of the 
pit, and only the flat armoured dome-shaped roof is exposed to attack. 
In the case of a smaller mounting, that for the S’? 0111 gun, very little 
effect has been produced on one occasion by the impact of three 8'3 cm 
(3'3-inch) projectiles, slight indents only being made. The door and 
back of the mounting is of thicker metal than the sides and fronts so 
as to resist a considerable blow from a piece of shell striking it at the 
opening left at the back of the pit, which, however, would not be a 
contingency likely to arise often. For firing permanently in one 
direction, the mounting is provided with a brake, and against skir¬ 
mishers dispersiou can be given by an arrangement limiting the 
rotation of the mounting to a certain angle. The ammunition is 
placed in tin boxes which stand on the floor of the chamber. 
This 5*7 cm (2*24-inch) 25-calibre quick-fire gun, in movable shielded 
mounting, was drawn on wheels by three heavy horses abreast, the 
total weight of the load being 2900 kilos. (2*85 tons), exclusive of 
the driver. It was driven a short distance along the range, when the 
