xiv PREFACE. 



responsibility. Let us remember that, as time 

 goes on, the struggle for existence is likely to 

 become keener and keener, and our future men 

 and women will require to turn more and more to 

 Nature and her children for health and recreation. 



KICHARD KEARTON. 



CATERHAM VALLEY, SURREY. 

 October, 1899. 



