PREFACE rii 



ficance of what seemed commonplace or trivial becomes 

 evident at once. Without attempting to become a 

 specialist himself, each man has at command the 

 accumulated fruits of the labours of specialists. 

 Historians, naturalists, botanists, geologists all the 

 devoted harvesters of human knowledge have laid 

 up store of unfailing remedies for ennui, and some 

 part of their secret, it is hoped, may be found in the 

 following pages. 



