The Plant World 



A Monthly Magazine of General Botany 



Established 1897 



Edited by 

 FORBEST ShREVE 



Published by 



The Plant World Association 



COMPOSED OF THE FOLLOWING MEMBERS: 



JoBBPH Chabucb Abtbxtb 



Purdue University 

 Otis Wiujah Caldwell 



University of Chicago 

 WiLUAU Austin Cannon 



Desert Laboratory 

 Chableb Stuabt Gaoeb 



Brooklyn Botanic Garden 



J. ABTHT7B HaBRIS 



Station for Exi>erlmental Evolution 



BUBTON EdWABD LmNQSTON 



Johns Hopkins University 

 Fbancis Ebnest Llotb 



McGlll University 

 Daniel Tbemblt MacDougal 



Carnegie Institution of Washington 



JaUES BeBTBAM OVEBTOIf 



University of Wisconsin 

 Gbobqb James Peibce 



Stanford University 



CbABLEB LOUtB POLLABD 



Staten Island Association 

 Ebbbebt Mavle Ricbabdb 

 Columbia University 



FOBBEBT ShBEVE 



Desert Laboratory 



VOLNET MOBOAN SPALDINQ 



Loma Linda, California 

 John Jaueb Thobnbeb 



University of Arizona 

 Edqab Nelson Tbanbbau 



Eastern Illinois Normal School 



All manuscripts submitted for publication should be t3rpe-written and in good 

 order. Galley proof is submitted to the author, who should return it as early as 

 possible to the Editor. Reprints should be ordered on a blank for that purpose 

 which accompanies the galley proofs. 



Reprints will be supplied at the following rates: 





WITHOUT COVEB8 



WITH COTBB8 



First 100 



Additional 100 



First 100 



AddlUonal 100 





$2.68 



$0.72 



$4.68 



$1.72 



Eight pages 



4.32 



1.20 



6.32 



2.20 





4.80 



2.00 



6.80 



3.00 



Express or postage is extra. 



Advertising rates will be furnished on application. 



Address all correspondence regarding contributions and reprints, and all 

 books for review to The Editor, The Plant World, Tucson, Arizona. 



The subscription price is $2.50 per annum in the United Statea, its overseas 

 dependencies, and Canada and Mexico; 83.00 to other countries. Single copies 

 less than twelve months old, 25 cents; single copies more than twelve months old, 

 30 cents. Volumes 8 to 14 inclusive can be supplied at $2.00 each. 



Missing numbers lost in the mails will be replaced gratis only when notice 

 is received within one month of date of issue. 



Make all remittances payable to The Plant World. Address all correspond- 

 ence regarding subscriptions, discontinuances, changes of address, back num- 

 bers and early volumes to: The Waverly Press, Williams & Wilkins Co., 2419-21 

 York Road, Baltimore, Md., or to The Plant World, Tucson, Arizona. 



