Potassium cyanide, KCN.
Hydrochloric acid, (dilute), HCl + nH2O.
Litmus paper, red and blue.
Brazil-wood paper.
Any other special reagents which may be needed will be mentioned as required.
CHAPTER II
GENERAL OUTLINE OF BLOWPIPE ANALYSIS
[ABBREVIATIONS: O. F. for oxidizing flame, R. F. for reducing flame, Ch. for charcoal, Ct. for coating, Bp. for blowpipe.]