Zi)ir Desilverizniinn. ll3 



LIST OF FIGURES. 



Plate III. 



Fig. 1, Sampler at Wj^andotte. 

 Fig. 2, Slag buggj' at Chelteuliam. 



Plate IV. 



Fig. 3, Blast furnace at the Pennsylvania Lead Works, Mansfield 



Valley. 



Plate V. 



Fig. 4, Desilverization kettles at the Germania Works, Utah. 



Plate VI. 



Fig. 5, Refining furnace, Germania Works. 



Pt.ate VII. 



Fig. 6, Steitz's sjqDlion. 

 Fig. 7. Polling crutch. 



Plate VIII. 



Fig. 8, Erodie's distillation furnace. 



Plate IX. 



Fig. 9, Cheltenham Furnace. 



Fig. 10, Steitz's sj'phou for the retorts. 



Plate X. 



Fig. 11, Faber du Faur's tilting furnace. 



Plate XL 



Fig. 12, Details of Faber du Faur's furnace. 



Plate XII. 



Fig. 13, Plan of furnace proposed by Faber du Faur for the Germania 

 Works. 



Plate XIII. 



Fig. 14, Faber du Faur's larger furnace. 



