BOOK VIII. 



291 



A WORKMAN CARRYING BROKEN ROCK IN A BARROW. B FIRST CHUTE. C FIRST BOX. 



D ITS HANDLES. E ITS BALES. F ROPE. G BEAM. H POST. I SECOND 



CHUTE. K SECOND BOX. L THIRD CHUTE. M THIRD BOX. N FIRST TABLE. 

 FIRST SIEVE. P FIRST TUB. Q SECOND TABLE. R SECOND SIEVE. S SECOND 

 TUB. T THIRD TABLE. V THIRD SIEVE. X THIRD TUB. Y PLUGS. 



