CONTENTS. XXIII 



Page. 

 Products of smelting Continued. 



Slag Daily assays, Table X Specificgravity determinations Properties Complete analy- 

 ses XXX to XXXII 698 



Chamber-dust Assays, Table XII; Analyses XXXIII and XXXIV Roasted dust, Analysis 



XXXV Fumes from Bartlett filter, Analysis XXXVI 711 



Speiss Analyses XXXVII and XXXVIII Assays, Table XIII 719 



Iron sows or salamanders Analysis XXXIX 722 



Mattes Analyses XL and XLI Assays, Table XIV 723 



Accretions Heartb accretions, Table XV Shaft accretions, Analysis XLII Peculiar accre- 

 tions, Analyses XLIII and XLIV 7-25 



SECTION V. 



THEORETICAL DISCUSSION 731 



Reactions in the blast-furnaces 731 



Reactions of lead compounds 732 



Reactions of silver compounds 735 



Reactions of iron compounds 736 



Chemical discussion of the Leadville furnaces. 737 



Raw materials entering into charges 738 



Weight of blast 740 



Loss of weight of charges in different zones 741 



Chemical reactions of the different zones 744 



Conclusions 745 



METALLURGICAL PLATES 749 



GENERAL INDEX.. 753 



