PREFACE 1X 
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. 
