Pomona College Journal of 

 Economic Botany 



CONTENTS 



1 Foreword 



2 Popenoe, F. W. 



The Avocado in Southern California 



3 EssiG, E. O. 



The Wither-tip in Ventura County 



4 Crawford, D. L. 



Biological Expedition to Southern Mexico 



5 Baker, C. F. 



The Botanic Garden of Para 



Subscription price $1.00 to domestic and $1.25 to foreign postal 

 countries. Reprints of any of the articles can be obtained at a nomi- 

 nal price. 



The pages of this quarterly are at the service of active workers 

 in Economic Botany, as related to Subtropical Horticulture, from 

 any part of the World. 



Especially is this Journal offered in exchange for all botanical 

 and horticultural journals, all proceedings, transactions, bulletins, 

 and reports of societies, gardens, laboratories and herbaria. 



Address all communications to 



Pomona Journal of Economic Botany 



C. F. Baker, Editor 



Pomona College, Claremont 

 California, U. S. A. 



