506 
MORRIS’ TUBE PRACTICE. 
A paper straight- 
edge sight was 
fixed on the 
FrencVs sight of 
the gun (to allow 
of sufficient deflec¬ 
tion being obtain¬ 
able) . The range 
strip was checked 
by several rounds 
being fired by Case 
II down the mark¬ 
ed straight line in 
front. Then curves 
of range (vide dia¬ 
gram) were marked 
out on the ground 
by trial shots, and 
these were filled in 
with chalk. An arc 
of about 50° was 
obtained for the 
fire area. The G. 
G.C. performed the 
duties of B.C. and 
range finder by means of the arcs on the ground. It was found neces¬ 
sary to mount on a limber and use field glasses for observation pur¬ 
poses, although the longest range was under 30 yards. Ranging was 
carried on in the ordinary way, and was very necessary as the gun, 
after being traversed two or three times, would run up eight or nine 
inches (25 yards) and the paper range strip had an awkward habit of 
shrinking. The latter was got over by putting on a new duplicate 
strip on the old marks, daily, before firing, but the fitting is rarely so 
accurate as not to necessitate some slight correction; never, however, 
more than would be a probable variation of gun range. 
The detail required was 
One G.G.C. 
One Detachment consisting of G.C., G.L., and 
four other numbers. 
One target man. 
Two safety sentries. 
The detachment was told off in the ordinary way, their general 
duties being as follows :— 
G.C. vide G.A. drill. 
G.L. ,, „ „ 
2 and 3 traverses, runs up or back, if required. 
4 elevates and fires. 
5 attends to tube and loads. 
