CONTENTS. 
Monograph of the North American Umbelliferae................-..--------- 
Introduction . 2.222.222.2222. ee eee eee ee ence -- 
Artificial key to the genera of North American Umbelliferae wee e eee eeeee 
Native genera and species...-......2...0 20002220202 e eee eee eee ee eee 
} Introduced genera and species..... 2.222.222.0020. 000200 022 e ee eee eee eee 
The origin and distribution of the cocoa palm ..................-.-.-------- 
Introductory... . 22.22.02... eee ee eee eee eee 
Improbability of Spanish introduction .........2..........0..2.-------- 
The cocoa palm in ancient America ........2...222--2.----2-2--22eeee eee 
b- ty tt : : 
Prehistoric introduction of other plants...............---.-.---.----- 
The dissemination of the cocoa palm.............-..-...2-222--20-2----- 
Origin of the varieties of the cocoanut .........2.2.2...2...-------- 
Human assistance necessary .........2..202220200-20- eee eee eee eee 
The original habitat of the cocoa palm ......2...0/....2.-2-------2---20- 
The direction of the trans-Pacific distribution ..............-..-----2--- 
- Summary of De Candolle’s arguments _.................--------------- 
Conclusions...... 22.22.20 20.20.222 22-2222 eee eee eee eee 
Economic plants by families .-....2....2....2.2.0200.0 020222 ee eee ee 
Classified list of economic plants .............2002-2--2---e eee eee eee cece 
Glossary of Indian names in scientific equivalents ................---.-- 
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