BULLETINS OF THE BUREAU OF PLANT INDUSTRY. 
The Bureau of Plant Industry, which was organized July 1, 1901, includes Vege- 
table Pathological and Physiological Investigations, Botanical Investigations and 
_ Experiments, Grass and Forage Plant Investigations, Pomological Investigations, and 
- Gardens and Grounds, all of which were formerly independent divisions, and alsg 
Seed and Plant Introduction, The Arlington Experimental Farm, Tea Iny eeeaonts 
and Experiments, and the Congressional Seed Distribution. Beginning with the 
_ date of the organization of the Bureau, the independent series of bulletins of each 
division was discontinued and all are now published as one series of the Bureau. 
The reader’s attention is- called to the following instructions for obtaining the 
publications of the Bureau: ~ 
‘The serial, scientific, and technical publications of the United States Department 
oi Agriculture are not for general distribution. All copies not required for official 
use are by law turned over to the Superintendent of Documents, who is empowered 
to sell them at cost. 
made to— — 
: Bie: Sipapierenorir OF Documents, 
All applications for such publications mot, therefore, be 
“‘Unxton BuILpING, 
‘** Washington, D. C.’’ - 
‘The bulletin published i in the Bureau series prior to this number is: 
No. 1. The Relation of Lime and Magnesia to Plant Growth, 1901. 
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