VI CONTENTS. 



CHAP. V. 



AFRICA. 



On the African Province. Its general Nature. Divided into Northern, 

 Equinoctial, and Southern. The Peculiarities and Animals of each. 

 Madagascar. African Genera of Quadrupeds and Birds - Page 91 



CHAP. VI. 



ON THE AUSTRALIAN PROVINCE. 



Its Connection with that of Asia. Distinguishing Features Quadrupeds. 

 Birds. Its Three chief Divisions New Guinea, New Holland, and the 

 Pacific Islands. Genera of Quadrupeds and Birds belonging thereto 114 



PART II. 



ON THE RISE AND PROGRESS OP SYSTEMATIC ZOOLOGY. 



CHAP. I. 



Preliminary Observations. Alleged Difference between Systems and 

 Methods. Objections thereto. Diversity of Systems. Natural and 

 Artificial Systems Mixed Systems. Requisites of a natural System 122 



CHAP. II. 



Exposition, with critical Remarks, on the principal artificial Systems. 

 Aristotle, Willughby, Linnasus, Cuvier. Partial Systems. Illiger, 

 Vieillot, Temminck, in Ornithology. De Geer, Latreille, Clairville, 

 and Leach, in Entomology. On Binary, or Dichotomous, Systems 132 



CHAP. III. 



On natural Systems. Preliminary Observations. Definition of a natural 

 System. Hermann's. Observations. Lamarck's System of the In- 

 vertebrated Animals. System of MacLeay in Entomology. Fries in 

 Botany. Alterations in MacLeay's System. Remarks thereon. Sep- 

 tenary and other Theories. General Remarks on numerical Theories, 

 and on the Necessity of proving that Groups are circular - - 196 



PART III. 



ON THE FIRST PRINCIPLES OF NATURAL 

 CLASSIFICATION. 



CHAP. I. 



The first Principles of the natural System briefly stated as Five Propo- 

 sitions, the first Three of which are here discussed ; viz., the Circularity, 

 the numerical Division, and the Theory of Representation - - 224 



