PREFACE IX 



special interest from whatever point of view regarded. 

 Part III. is, in my own opinion, much the most- 

 important part of the book. It is a storehouse of 

 reliable facts, from which each reader may draw 

 his own conclusions. Part IV. consists of discussions 

 on a subject of considerable importance, as will be 

 evident. This division of the work into parts rather 

 than chapters permits of the reading of any one 

 division of the work by those who may not desire 

 to peruse the whole. 



The prosecution of these studies has necessitated 

 the breeding and rearing of a large number of pure- 

 bred animals during the last ten years, and while it 

 has involved considerable expense for one who has 

 received no special favours from Dame Fortune, the 

 work has been a source of pleasure, and, it is hoped, 

 some psychological and biological wisdom also to 

 myself ; and if it leads to a truer and more complete 

 study of the psychic nature of animals than hereto- 

 fore, the Author will feel that his time, labour, and 

 money have not been expended in vain. 



I count myself fortunate in being able, by the 

 kind permission of Mr T. Mann Jones, of Northam, 

 England, to embody in this book, in the form of 

 brief notes, some of the observations and reflections 

 of so experienced and accurate a student of animal 

 intelligence as he has proved himself to be. Mr Jones 

 took the pains to write me, at considerable length, 

 after reading my notes on psychic development, for 

 which I am very grateful. 



