Chapter 30

MAGNESIUM, ALUMINIUM, AND ZINC.

Occurrence and preparation of magnesium.--Compounds of aluminium: reduction; properties, and uses.--Compounds, uses, and reduction of zinc CHAPTER XLVIII.

IRON AND ITS COMPOUNDS.

Ores of iron.--Pig-iron.--Steel.--Wrought-iron.--Properties. -- Salts of iron.--Change of valence and of color