CHAPTER II. The Elementary Facts of Distribution.

THE ELEMENTARY FACTS OF DISTRIBUTION.

Importance of Locality as an Essential Character of Species--Areas of Distribution--Extent and Limitations of Specific Areas--Specific Range of Birds--Generic Areas--Separate and Overlapping Areas--The Species of Tits as illustrating Areas of Distribution--The Distribution of the Species of Jays--Discontinuous Generic Areas--Peculiarities of Generic and Family Distribution--General Features of Overlapping and Discontinuous Areas--Restricted Areas of Families--The Distribution of Orders

Pages 12-30

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