R0.ME11ANC, 



117 



B C = 3 inches. Thus constructed, the centre 

 of gravity will fatl tWSMf 00 ib^ edge of its 

 mmwm mt^^ ict C. V^km used m m offen- 

 sive weapon, it is usLially tlirown %vith the comex 

 pi(U' outwards ; hut \\ lien intended tt) return, it 

 is held in the reverse position ; althougli it will 

 probaHy fe dfliet direction, if properly 



For the latter jiurpose, however, it should 

 he thrown from the lumd at a conslderahle ele- 

 vation (45^) with a sudden jerk, so as to com- 

 bine with the projectile force a rapid rotation 

 wmA its centre of gravity* Tke wttafcion acts 

 constantly in opposition to its Wn^ 0f ffight ; so 

 that if a siinihir rotation could he coniinunicated 

 witlioiit any projectile force, the instrument 

 would move hackwards ; now^, as the force with 



which it h thioum h eonstaiitJy dterfi^ing 

 wink the rotaljon ^liuuiss, it mtist v^mn^p 

 ILmve at a eei'tain poltit where these opposite 



