INFORMATION FOR SUBSCRIBERS 



T 



WO THOUSAND SERIAL PUBLICATIONS ARE NOW 

 BEING CONSULTED TO SECURE ABSTRACTS AND 

 CITATIONS FOR BOTANICAL ABSTRACTS. 



The Bibliographical Committee anticipates that this reference 

 list will be increased to twenty-five hundred serial publications before 

 the end of 1920. 



The large number of references available is amazing even to those 

 ivho felt that they possessed a comprehensive knowledge of the avail able 

 literature. 



Anyone who is taking botany seriously ought to want Botanical 

 Abstracts as his own propert}', just as he wants certain private 

 books in his own library. Every day we receive further assurances 

 from subscribers that they regard Botanical Abstracts as a most 

 important necessity. 



The first two issues of the 1920 volumes (Vols. Ill and IV) 

 are available and will be promptly sent to you if you will cut out 

 and return the blank on the other side of this page. A statement 

 will be rendered at any time within ninety days if you prefer. 

 Just don't delay, but order at once, is the best suggestion we feci 

 could be made-. 



THE PUBLISHERS. 



BOTANICAL ABSTRACTS. VOL. Ill, NO 5. 



