vi PREFACE 
It is not impossible that some readers will 
expect to find much that is absent from this 
little book—but it seemed better to utilise 
the space at my disposal by devoting it to 
matter not so generally discussed in a volume 
of this size, than to attempt to say again what 
has already been well done in other works of 
this scope. 
In conclusion I wish to express my thanks 
to Mr. Tabor and to Mr. Trowbridge for the 
assistance they have kindly given me in the 
preparation of nearly half the illustrations. 
J. B. F. 
Gerrard’s Cross, 
Feb. 20, 1913. 
