B(~)OK VI 



A- Upright beams. B— Sills laid flat upon the ground. C— Posts. D— Area. 

 E— Sill set at the bottom of the hole. F — Axle. G — Double cross-beams. 

 H — Drum. I— Win ding- ropes. K — Bucket. L — Small pieces of wood hanging 

 FROM double cross-beams. M— Short wooden block. N— Chain. O— Pole bar. 

 P— Grappling hook. (Some members mentioned in the text are not shown). 



