THE ROYAL ARTILLERY INSTITUTION. 
479 
THE CLOCK SIGNAL-YANE. 
BY 
CAPTAIN W. L. YONGE, R.A. 
The following proposal for a new system of signalling is based upon 
the fact, which will scarcely be disputed, that every soldier in the army 
is able to read the clock. Armed with this fact, I would place 
Instruction before ^ ie soldier a representation of a clock, as in Eig. 1. 
To avoid complications I dispense with the minute hand. 
I then remind the pupil that the first hour is in progress while the hand of 
the clock passes from the figure XII. to the figure I., which period of time 
is represented by the space between the figures XII. and I. This constitutes 
the first hour space, or one. In like manner, the interval between the 
figures I. and II. constitutes the second hour space, or two, and so on 
through the series of the twelve hours. These several hour spaces are 
shown divided off in Eig. 1, and numbered accordingly. I would then 
Fig. 1. 
point out that the several spaces are identical in outline, and differ only 
in their relative positions as regards the centre and circumference of the 
imaginary clock dial. The segments are then detached from the circle 
(Eig. 1) and shown singly, each in its own relative position. Each segment 
then becomes a representative of the signal vane. 
I venture to assert that no man who has once mastered these rudiments can 
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