458 Hubbard — Antimony Mines of Shiu Chow. 



Figs. 2-4. 



'////////AZZZZZ 



Fig. 2. — Front elevation of antimony furnace used at Shiu Chow to 

 reduce stibnite ores. 



Fig. 3. — Section, front-back, through ore side of furnace. 



Fig. 4. — Horizontal section through furnace about two inches above 

 grates. Oblique hatched part is made of bricks and mortar; cross 

 hatched = doors. Scale, 1" = about 4'. 



a — stack; b — chute to draw off metallic antimony; c — mold for ingots of 

 antimony; d — fire door; e — ore door; / — grates; g — air draft; h — ashes. 



