NOTICE 



1. Annual Vohinies. — The former practice of issuing approx- 

 imately 300-page volumes will be discontinued. Instead, begin- 

 ning with Volume 1 1 , single annual volumes will be issued in 

 monthly numbers, the December number being devoted to the 

 annual authors' and subject indexes. In making the transition, 

 Volume 11 will unavoidably have but ten numbers (March- 

 December inclusive). 



2. Subject Index for Volumes 1-10. — Various causes have pre- 

 vented the publication of subject indexes in accordance with 

 the schedules announced in earlier numbers. In view of the 

 transition to the annual volume basis it seemed best to extend 

 this delay slightly and issue a single subject index for Volumes 

 1-10 inclusive. This index is now practically complete in manu- 

 script form, and will be ready to print in the near future. As 

 soon as the approximate manufacturing cost of this index can 

 be determined, subscribers will be informed and given an oppor- 

 tunity to place orders for it. 



Board of Control of Botanical Abstracts 



