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 OF SYSTEMATIC ZOOLOGY. 
CELAP 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, Linnzus, 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 ITI. 
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 
- Aa 
