497 



GENERAL ANALYTICAL INDEX. 



MUCH experience of books, especially of such as abound both in 

 facts and inferences, has led me to regard a full general index as 

 one of their most important features or one of their greatest wants. 

 Such an index offers the means whereby the reader who has little 

 time or inclination to peruse the whole of a bulky volume, or of a 

 series of volumes, may, almost at a glance, satisfy himself of the 

 general scope or aim of any given work, or may guide himself to 

 any section of it that may exclusively have an interest for him. 



Such an index is, I think, especially necessary in a work which 

 must be regarded as the condensation of four or five volumes into 

 two, and which contains, as one of the results of selection of material, 

 numerous references, scattered throughout its pages, to subjects 

 that, for reasons specified in the introduction to the first volume, 

 cannot be treated otherwise than by passing mention. And yet 

 these references are necessary to the completeness of the catalogue 

 of the mental endowments of animals necessary to a general view 

 of the subject of ' Mind in the Lower Animals.' 



There is every probability, moreover, that the present work will 

 be read by persons of the most opposite habits of thought and life ; 

 by physicians and metaphysicians, by travellers and naturalists, by 

 sportsmen and veterinarians, by theologians and moral philosophers, 

 and by critics of all kinds, as well as by members of that unlimited 

 heterogeneous class, the general public, each of them being interested 

 in some particular department of the general subject. To students 

 so various in their views and requirements a full general index will, 



VOL. II. K K 



