Contents.

I. Introduction and Historical Statement [1]
II. The Oxalate Method [3]
Preparation of Pure Cadmium [3]
Preparation of Nitric Acid [4]
Purification of Water [4]
Purification of Oxalic Acid [5]
Preparation of Cadmium Oxalate [7]
Procedure [8]
Results [13]
III. The Sulphide Method [16]
Preparation of Hydrogen Sulphide [16]
Preparation of Nitrogen [17]
Mode of Procedure [18]
Results [24]
Discussion of the Results [24]
Discussion of the Method [26]
IV. The Chloride Method [33]
Preparation of Cadmium Chloride [35]
The Filters [48]
Analytical Process [52]
Results [57]
Discussion of the Results [58]
V. The Bromide Method [69]
Preparation of Cadmium Bromide and Hydrobromic Acid [70]
Method of Analysis [78]
Results [80]
Discussion of the Results [80]
VI. Syntheses of Cadmium Sulphate [82]
Results [90]
Discussion of the Results [91]
VII. The Oxide Method [94]
Results [96]
Discussion of the Results [97]
Determination of Error [104]
Discussion of the Oxalate Method [114]
VIII. Other Methods [119]
IX. Conclusion [122]