The Plant World 



A Monthly Magazine of General Botany 



Established 1897 



Edited by 

 FORBEST ShREVE 



Published by 



The Plant World Association 



COMPOSED OP THE FOLLOWING MEMBERS: 



JoMpa Cbablgs Ahtbub 



Purdue University 

 Otib William Caldwell 



Unlveralty of Chlcaco 

 William Austin Cannon 



Denert Laboratory 

 Charles Stuabt Gaoer 



Brooklyn Botanic Garden 

 J. Abthur Harris 



Station for Experimental Evolution 

 BvBTON Edward Livingston 



Johns Hopkins University 

 Fbancib Ernest Llotd 



McGlU UnU-erslty 

 Daniel Trembly MacDouoal 



Carnegie Institution of Waahlnfton 



James Bebtbam Overton 



University of Wisconsin 

 Georoe James Peirce 



Stanford University 

 Charles Louis Pollard 



Staten Island Association 

 Hebbbrt Maule Richards 



Colunibia University 

 Forrest Shbevb 



Desert Laboratory 

 Volney Morgan Spalding 



Loma Linda, California 

 John James Thornber 



University of Arliona 

 Edgar Nelson Tranbgau 



Eastern Illinois Normal School 



All manuscripts submitted for publication should be type-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 COTBB8 



WITH COT EBB 



First 100 



Addltlonsl 100 



First 100 



Additional 100 



Eight pages 



t2.t8 

 4.32 

 4.80 



$0.72 



1.20 

 2.00 



(4.68 

 6.32 

 6.80 



11.72 



2.20 

 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 States, its overseas 

 dependencies, and Canada and Mexico; $3.00 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 & WilkinsCo., 2419-21 

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



