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APPENDIX. 



BIBLIOGRAPHY. 



Brehm's Thierleben is the great repository of facts con- 

 cerning the social lives of the higher animals. The third 

 edition, in ten large volumes, fully illustrated, and edited 

 by Pechuel Losche, has lately appeared (Leipzig und Wien, 

 Bibliog. Institute, 1890-92). It is, indeed, as Virchow has 

 lately termed it, " a sort of zoological library," popular in 

 character, and almost purely descriptive. (There is a 

 French edition of this work in nine volumes, but, with 

 the exception of one fragment, it has not appeared in 

 English. The nearest approach to Brehm's work in 

 England is Cassell's New Natural History, and in 

 America Xht Riverside Natural History.) It is impossible 

 to enumerate the numberless works by travellers and 

 others on which the knowledge of animal industries is 

 founded. The works of Huber, Fabre, Audubon, Le 

 Vaillant, C. St. John, Belt, Bates, Tennent, are frequently 

 quoted in the course of this work. Many of the most 

 important and detailed studies of animal industries are 

 scattered through the pages of the scientific periodicals 

 of all countries. References to a few of the chief of these 

 studies will be found in the text. 



For a scientific discussion of the phenomena of animal skill 

 and intelligence we may perhaps best turn to Professor 

 C. Lloyd Morgan, whose work is always both acute and 

 cautious. In Animal Life and Intelligence (1890) he has 



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