The Plant World 



A Monthly Magazine of General Botany 



Established 1897 



Edited by 



Forrest Shreve 



Published by 



The Plant World Association 



COMPOSED OF THE FOLLOWING MEMBERS: 



Joseph Charles Arthur 



Purdue University 

 Otis Wiluam Caldwell 



University of Chicago 

 William Austin Cannon 



Desert Laboratory 

 Charles Stuabt Gaqer 



Brooklyn Botanic Garden 

 J. Abthur Harris 



Station for Experimental Evolution 

 Burton Edward Litinoston 



Johns Hopkins University 

 Francis Ernest Llotd 



McGUl University 

 Daniel Treublt MacDouoal 



Carnegie Institution of Washlncton 



Jakes Bertram Otertom 



University of Wisconsin 

 Georob Jaues Peircb 



Stanford University 

 Charles Louis Pollard 



Staten Island Association 

 Herbert Maule Ricbabds 



Columbia University 

 Fobbebt Shbeve 



Desert Laboratory 



VOLNET MOBOAN SPALDINO 



Loma Linda, California 

 John Jaues Thobnber 



University of Arlsona 

 Edgar Nelson Tbanseau 



Extern HHdoIs 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 COTBBS 



WITH C0VBB8 



First 100 



Additional 100 



First 100 



Additional 100 





$2.68 



tO.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 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 & Wilkins Co., 2419-21 

 Vork Road, Baltimore, Md., or to The Plant World, Tucbod, Arizona. 



