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58 bullets. The first two are harmless, being brass cases or small steel clips of various shapes and sizes, but all spent bullets should be considered as dangerous until identified, since they may contain incendiary composition or high explosive.

32. BRITISH BALLOON DEVICES

The following objects of British origin may be found. Each is associated with a balloon 8 ft. diameter. (See top of Figure 77.)

(a) Small Yellow Bombs (Balloon Device "A")

The Small Yellow Bomb is no longer in use in its original form, but a modified version is now being used as an attachment to barrage balloons. (See Figure 74 and sub-section (f) below.)





(b) Canisters with Wire (Balloon Device "B")

Suspended close to the balloon may be found a small canister, of ordinary tin colour, 8 in. diameter and 9 in. long with lengths of string or wire which may amount to a total of 1,000 feet attached. The contents of these canisters (shown suspended at the bottom of Fig. 77) are harmless unless exposed to a naked flame.

(c) Phosphorus Bottles (Balloon Device "C")

This device is associated with the canister used in device (b). It consists of a cylindrical metal container 8¼ in. diameter and 9 in. long fitted with a lid and holding seven or eight short-necked half-pint bottles containing a mixture of phosphorus and benzine which ignites immediately if the glass is shattered. The bottles may be found