BOOK IX. 



393 



^ tTvT^att C— Wood D— Ore dripping lead. 



A-FURNACE OF THE CARMI. B-LoW WALL^ C ^^00°- I_ReCTANGULAR 



E-Large crucible. F-Moulds. G-Ladle- H-Slabs of _lead^ i ^^^ ^^^^ 



HOLE AT THE back of THE FURNACE ^-SaXON FURNACE L^U^^^^ p_WESTPHALIAN 



OF THE FURNACE. M-WOOD. N-UpPER CRUCIBLE O-DlPPI^G ^«T. ^ 

 METHOD OF MELTING. Q-HEAPS OF CHARCOAL^ «^^;;! 



T— Crucibles. V— Polish hearth. 



