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BOOK VIII. 



particles of the stones may flow away. The particles of medium size generally 

 settle in the middle part of the buddle, where they are arrested by interwoven 

 fir twigs. The mud which flows down with the water settles between the 

 twigs and the board which closes the lower end of the buddle. The tin-stone 

 of large size is removed separately from the buddle with a shovel ; those 

 of medium size are also removed separately, and hkewise the mud is removed 

 separately, for they are separately washed on the canvas strakes and on 

 the ordinary strake, and separately roasted and smelted. The tin-stone 

 which has settled in the middle part of the buddle, is also always washed 

 separately on the canvas strakes ; but if the particles are nearly equal in size 

 to those which have settled in the upper part of the buddle, they are washed 

 with them in the ordinary strake and are roasted and smelted with them. 

 However, the mud is never washed with the others, either on the canvas 

 strakes or on the ordinary strake, but separately, and the fine tin-stone which 

 is obtained from it is roasted and smelted separately. The two large buddies 

 discharge into a cross trough, and it again empties through a launder into 

 a settling-pit which is outside the building. 



A — Launder reaching to the screen. B — Transverse trough. C — Spouts. 

 D — Large buddles. E — Shovel. F — Interwoven twigs. G — Boards closing 



THE BUDDLES. H — CrOSS TROUGH. 



