B. P. I.— 414. 



INDEX TO PAPERS RELATING TO PLANT-INDUSTRY 

 SUBJECTS IN THE YEARBOOKS OF THE UNITED 

 STATES DEPARTMENT OF AGRICULTURE. 



EXPLANATORY STATEMENT. 



The index following is intended primarily to cover the subjects 

 referred to in the 65 papers contributed by the Bureau of Plant 

 Industry since its organization, on July 1, 1901, to the Yearbooks 

 of the United States Department of Agriculture and afterwards 

 reprinted in separate form. 



In order to make this index more satisfactory and complete, how- 

 ever, it has been deemed desirable to include with it a title index to 

 papers relating to plant-industry subjects printed in the Yearbooks 

 issued prior to the organization of the Bureau of Plant Industry. 

 These title entries are therefore inserted with the others, but are dis- 

 tinguished from them by the use of smaller type. For a complete 

 subject index to these earlier papers and all others issued in Yearbooks 

 prior to 1901 the reader is referred to Bulletin No. 7 of the Division 

 of Publications, entitled " Index to the Yearbooks of the United States 

 Department of Agriculture, 1894-1900," by Charles H. Greathouse. 



All of the papers contributed to the Yearbooks which have been 

 reprinted in separate form for gratuitous distribution are indicated 

 (1) by the number assigned to each such paper, known as a "Year- 

 book Extract" or u Yearbook Separate," by the Document Section of 

 the Division of Publications, followed (2) by the year showing the par- 

 ticular Yearbook in which the article referred to appeared and (3) by 

 the numbers of the pages on which the specified matter will be found. 



Many of the earlier Yearbook papers are now out of print in sepa- 

 rate form. Those separates that are now available for distribution a 



a The stock of free publications on hand at the Department of Agriculture is con- 

 stantly changing, the editions being exhausted from time to time but reprinted when 

 required. 



At the time of going to press (November, 1908) the following papers upon plant- 

 industry subjects printed in the Yearbooks may be obtained in separate form from the 

 Department of Agriculture upon request: Nos. 20, 27, 28, 47, 50, 85, 87, 90, 128, 151, 

 157, 176, 195, 203, 206, 208, 211, 215, 217, 220, 222, 262, 266, 278, 279, 283, 291, 293, 

 314, 317, 320, 321, 326, 330, 340, 343, 356, 361, 377, 383, 387, 401, 419, 422, 427, 429, 

 446, 450, 453, 456, 459, 461, 463. 



[Cir. 17 J 



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