yi 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 OF SYSTEMATIC ZOOLOGY. 



CHAP. L 



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, Linnaus, Cuvier. — Partial Systems. — Illiger, 

 Vieillot, Temminck, in Ornithology. — De Geer, LatreiUe, 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 OP 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 



