CONTENTS 



Chapter i 



HISTORICAL PLANT GEOGRAPHY — SCOPE, RELATION 

 TO ALLIED SCIENCES, METHODS OF INVESTI- 

 GATION : — Scope and name or the science — Relation 

 TO paleobotany — Relation to phylogenetic taxonomy 

 — Relation to paleogeography — Relation to paleocli- 

 matology — relation to historical geology — methods 



employed est a HISTORICO-GEOGRAPmCAL STUDY OF FLORAS I 



Chapter 2 

 HISTORY OF THE SCIENCE 10 



Chapter 3 

 AREAS, THEIR CENTERS AND BOUNDARIES : — Area 



CONCEPT DEFINED — CeNTER OF AN AREA — BOUNDARIES OF 



AN AREA 25 



Chapter 4 

 THE ORIGIN OF AREAS : — Monotopic or polytopic origin 



OF AREAS 48 



Chapter 5 



TYPES OF AREAS : — Cosmopolitan and endemic areas — 

 Vicarious areas — Relic areas — Continuous and dis- 

 continuous areas — Chief types of discontinuous areas 58 



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