2 



INTRODUCTORY NOTE. 



This catalogue describes over 300 spec- 

 ies or varieties of foreign plants most of 

 which have not been grown to any extent in 

 this country. Our familiarity wtlh them is 

 consequently very limited and they are not 

 like standard seeds and plants, the behav- 

 iour of which can be predicted with more or 

 less certainty. 



They have been imported for trial be- 

 cause of some direct or indirect use which it 

 is believed can be made of them by Americans. 



They. are introduced primarily for use by 

 the experts of the United States Department 

 of Agriculture and by State Experiment Sta- 

 tions of the country, but many of them will 

 be available to such private experimenters as 

 have the necessary facilities and desire to 

 test them. 



Since these plants must ultimately be 

 grown by private individuals before their 

 commercial success is assured, it may be well 

 to point out that those private experiment- 

 ers who test these problematical new plants 

 are assisting in a very practical way in the 

 plant introduction work of the country even 

 though they are not paid for their work. 



It is often around the successful culti- 

 vation of a new introduction by some private 

 Individual that a new plant industry begins, 



D. of D. 



JUN 13 1917 



