THE

SECOND STEP IN CHEMISTRY;

OB,

The Student's Guide

TO THE

HIGHER BRANCHES OF THE SCIENCE.

SECOND STEP IN
IN CHEMISTRY;

OR,

The Student's Guide

TO THE

HIGHER BRANCHES OF THE SCIENCE.

BY

ROBERT GALLOWAY, F.C.S.,

ROFESSOR OF PRACTICAL CHEMISTRY, MUSEUM OF IRISH INDUSTRY; AUTHOR OF
MANUAL OF QUALITATIVE ANALYSIS," "THE FIRST STEP IN CHEMISTRY," ETC.

"

PREFACE.

THIS work, as the title indicates, is not intended for the mere beginner; the subjects which ought to be brought before the student in a first book or course on the science having formed the subject of a former work, "The First Step in Chemistry," have therefore been omitted. It is intended to teach the higher branches of the science, especially those newer views which are now being very generally adopted. As these newer views are mainly founded on volume relations, the work commences by teaching the specific gravity of gases, and their correction for temperature, pressure, and moisture-combination by volumethe specific gravity of vapours, and its application to control the formulæ of substances-atomic volumes, &c.,—by exercises, which the student has to perform. These subjects, which I in common with most other teachers, I believe-have found it so difficult to make