CONTENTS. XXIII 



Page. 

 •Products of KUielliu^ — Coutiuucd. 



Slag — Daily assays, Table X — Specificgravitydetenuiuatious — Properties — Coiuplet e analy- 

 ses XXX to XXXII ' .'. G98 



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 — Hearth accretions, Table XV — Shaft accretions, Analysis XLII — Peculiar accre- 

 tions, Analyses XLIIIand XLIV 725 



Section V. 



Theorbtioal 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 dilferent zones 744 



Conclusions 745 



Metallurgical plates 749 



General index 753 



