ILLUSTRATIONS
THE LIVENS PROJECTOR-I. Frontispiece
A completed battery of projectors in the foreground, with a battery on the left rear, half dug in. Suitably camouflaged with brush, the batteries are not observable by aircraft, and, being in "No-Man's-Land," neither party can detect them by day.
FACING PAGE TYPICAL GAS SHELL BURSTING. 30
THE LIVENS PROJECTOR-II 61
A working party fitting electric leads and adjusting bombs prior to discharge. This work occurs at night.
THE LIVENS PROJECTOR-III. 133 Explosion of Livens bombs on the objective.
SMOKE BARRAGE. 181
Note the sharp curtain which is formed, behind which the infantry advance.