CHLORHYDRIC ACID.

Preparation and tests.--Bromhydric, iodhiydric, and fluorhydric
acids.--Etching glass

CHAPTER XVIII.

NITRIC ACID.

Preparation, properties, tests, and uses.--Aqua regia:
preparation and action

CHAPTER XIX.

SULPHURIC ACID.

Preparation, tests, manufacture, and importance.-Fuming sulphuric
acid

CHAPTER XX.

AMMONIUM HYDRATE.

Preparation of bases.--Formation, preparation, tests, and uses of
ammonia.

Chapter XXI.

SODIUM HYDRATE.