BOOK VIII. 



293 



right and to the left, and in this way passes through it the smaller pieces of 

 earth, sand, and broken rock. The larger pieces remain in the sieve, and 

 these are taken out, placed in a heap and put under the stamps. The 

 mud, together with line sand, coarse sand, and broken rock, whicii remain 

 after the water has been drawn out of the tub, is removed by an iron shovel 

 and washed in the sluice, about which 1 will speak a little later. 



The Bolicmians use a basket a foot and a half broad and half a foot deep, 

 bound together by osiers. It has two handles by which it is grasped, when 

 they move it about and shake it in the tub or in a small pool nearly full 

 of water. All that passes through it into the tub or pool they take out and 

 wash in a bowl, which is higher in the back part and lower and fiat in the 

 front ; it is grasped by the two handles and shaken in the water, the lighter 

 particles flowing away, and the heavier and mineral portion sinking to the 

 bottom. 



\ — Basket. B — Its handles. C — Dish. D — Its back part. E — Its front part. 

 F— Handles of same. 



Gold ore, after being broken vfith hammers or crushed by the stamps, 

 and even tin ore, is further milled to powder. The upper millstone, which 



