BOOK IX. 



389 



A, B TWO FURNACES. C TAP-HOLES OF FURNACES. D FOREHEARTHS. E THEIR 



TAP-HOLES. F DIPPING-POTS. G AT THE ONE FURNACE STANDS THE SMELTER CARRYING 



A WICKER BASKET FULL OF CHARCOAL. AT THE OTHER FURNACE STANDS A SMELTER WHO 

 WITH THE THIRD HOOKED BAR BREAKS AWAY THE MATERIAL WHICH HAS FROZEN THE TAP- 

 HOLE OF THE FURNACE. H HOOKED BAR. I HEAP OF CHARCOAL. K BARROW ON 

 WHICH IS A BOX MADE OF WICKER WORK IN WHICH THE COALS ARE MEASURED. L IRON 



SPADE. 



