Hand Grenade No. 9.--Formerly known as double-cylinder heavy pattern. Battye Hand Grenade. Pitcher Hand Grenade. Oval Hand Grenade. Ball Hand Grenade. _Hand Grenades Nos. 6 and 7_ consist of metal cases filled with T.N.T and a composite explosive and are exactly alike, except that No. 7 contains shrapnel bullets or scrap iron, while No. 6 contains only explosive. At the top of each case is a place to fix the friction igniter, which is supplied separately. When these bombs are to be used, detonator fuse and igniter are put in and firmly fixed. Before throwing the becket on, head of igniter should be pulled smartly off. _Hand Grenades Nos. 8 and 9_ are similar to the above, except that the fuse is lighted by a Nobel Patent Lighter[1]. The _Battye Grenade_ consists of a grooved cast iron cylinder filled with explosive. The top is closed by a wooden plug pierced centrally for insertion of detonator and fire. [1] _The Nobel lighter_ consists of two cardboard tubes, one fitting over the other. Inside the top end of the outer tube there is a layer of friction composition; fixed to the top end of the inner tube is a forked brass friction head, which is held in position by a safety pin fastened through both tubes. Inside the other end of the inner tube is a small copper band, into which the fuse is fitted. At the joint of the two tubes there is a narrow tape band with a loose end. To light the fuse, pull off tape and safety pin, then press down outer tube and turn slightly. This lighter has a five-second fuse attached. _The Pitcher Hand Grenade_ is very similar to the Battye, only different in that it is slightly heavier and having a different patent lighter. This lighter is somewhat complicated and special instructions should be given before the grenade is used. [Illustration: _HAND GRENADE NO. 7._ _BALL HAND GRENADE._] _The Oval Hand Grenade_ is an egg-shaped cast iron receptacle filled with ammonal. One egg has a steel plug and the other a flanged brass plug bored centrally, to which a hollow copper tube is fixed to take the detonator. This grenade is set off by a Brock fuse and lighter[2]. [2] _The Brock lighter_ consists of a match-head and fuse combined. The head consists of a small cardboard cup filled with friction composition and covered with waterproof paper. With this type of lighter an armlet covered with match composition is worn by the bomber on the left forearm. To ignite fuse, first pull off waterproof paper and then strike head against armlet. Time of fuse 5 seconds. _The Ball Hand Grenade_ consists of a cast iron sphere, 3 inches in diameter, filled with ammonal and closed by a screwed steel plug which has attached to it a covered tube to take detonator in the center of grenade. It is also lighted by a Brock lighter.