While keeping the size of the book within reasonable limits, no effort
has been spared to render it as complete as possible. This has only been
achieved by adding to my own experience a great deal of the work of others.
To mention individually those who have given me permission to use their
writings would be too long a matter here. In every case, however, where the
quotation is of any length, the source of my information is given, either
in the text or in an accompanying footnote. A few there are who will,
perhaps, find themselves quoted without my having first obtained their
permission to do so. They, with the others, will, I am sure, accept my
hearty thanks.

The publishers have been generous in the matter of illustrations and
diagrams, and although to the older practitioner some of these may appear
superfluous, it is hoped they will serve to render the work an acceptable
textbook for the student.

H. CAULTON REEKS.

SPALDING, _January, 1906_.


CONTENTS


CHAPTER I

INTRODUCTION