Silvering, [149];
Dressing, [151]
Correspondence, How to make copies of, [137]
Cube roots, [191]
Cubes, [191]
Cyanide of potassium, Use of, in extracting gold, [95], [96]
Daintree, on deposition of gold from chloride, [51]
Diamond drilling, [173]
Directors of companies, [114] et seq.