ANNOUNCEMENTS OF IMPORTANCE- 
TO ALL EXPERIMENTERS. 
It is desired to call the attention of experimenters and corre- 
spondents of this Office to the purpose of its various publications. 
Plant Immigrants is a monthly circular, designed to inform plant breed- 
ers and experimenters of the arrival of interesting material which may 
be available later; to report interesting results obtained with plants 
which have been distributed in past years; and to popularize, by means 
of special articles and illustrations, plants of particular interest 
or promise. 
The permanent Inventory of Seeds and Plants Imported, which does 
not appear until a year or more after the receipt of plants which it 
describes, is an historical record of all introductions made by this 
Office. It also j furnishes experimenters with such data as are avail- 
able concerning the character of each species or variety, its origin, 
uses, and cultural requirements. 
The Annual List of Plant Introductions, which is published toward 
the end of the year, and is sent to all cooperators, describes all 
species and varieties available for distribution. Requests for plant 
material should in general be based upon this list. When based upon 
the Inventory, which describes everything received, it is frequently 
impossible for us to fill them. Many introductions are eliminated in 
the first tests, and are not propagated for distribution; while our 
stocks of others have been exhausted by the time the Inventory is 
published. 
This number issued August 25, 1924. 
