138 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



Physiological and Fermentation 



Investigations R. H. True, Physiologist in Charge. 



Agricultural Technology N. A. Cobb, Technologist in Charge. 



Fiber-Plant Investigations L. H. Dewey, Botanist in Charge. 



Grain Standardization J. W. T. Duvel, Technologist in Charge. 



Biophysical Investigations Lyman J. Briggs, Biophysicist in Charge. 



Seed - Testing Laboratories ; En- 

 forcement of Seed Importation 

 Act E. Brown, Botanist in Charge. 



Cereal Investigations M. A. Carleton, Cerealist in Charge. 



Corn Investigations C. P. Hartley, Physiologist in Charge. 



Tobacco Investigations W. W. Garner, Physiologist in Charge. 



Paper-Plant Investigations Directed by C. J. Brand, Chief of Office of 



Markets and Rural Organization. 



Alkali and Drought Resistant Plant 



Investigations T. H. Kearney, Physiologist in Charge. 



Sugar-Beet Investigations C. O. Townsend, Pathologist in Charge. 



Economic and Systematic Botany Frederick V. Coville, Botanist in Charge. 



Dry-Land Agriculture Investigations-E. C. Chilcott, Agriculturist in Charge. 



Western Irrigation Agriculture C. S. Scofield, Agriculturist in Charge. 



Horticultural and Pomological In- 

 vestigations L. C. Corbett, Horticulturist in Charge. 



Arlington Experimental Farm E. C. Butterfield, Assistant Horticulturist 



in Charge. 



Gardens and Grounds E. M. Byrnes, Assistant in Charge. 



Foreign Seed and Plant Introduc- 

 tion David Fairchild, Agricultural Explorer in 



Charge. 



Forage-Crop Investigations C. V. Piper, Agrostologist in Charge. 



Congressional Seed Distribution R. A. Oakley, Agronomist in Charge. 



Demonstrations on Reclamation 

 Projects F. D. Farrell, Agriculturist in Charge. 



From September 1, 1915, to August 31, 1916, the changes in the 

 personnel of the bureau were as follows: Resignations, 304; deaths, 

 7; removals, 3; transfers from bureau, 48; furloughs, 85; termina- 

 tions of appointments, 446 ; making a total of 893 employees dropped 

 from the rolls during that period. There have been made in the 

 same period 1,729 appointments, increasing the total force of the 

 bureau by 836. On September 1, 1916, the numerical strength of 

 the bureau was as follows : In Washington, 861 ; outside of Washing- 

 ton, 1,419 ; of which 634 were engaged in the cooperative work on the 

 eradication and control of citrus canker and 61 in the cooperative 

 work on the eradication and control of white-pine blister rust ; total, 

 2,280. The total number of employees in the bureau on the same 

 date a year ago was 1,444. 



The activities of the bureau during the past year are outlined 

 more or less fully in the 36 papers in the Journal of Agricultural 

 Research, 40 Department Bulletins, 20 Farmers' Bulletins, and 34 

 circulars, which have been included in departmental publications as 

 contributions from this bureau. Certain of the more striking re- 

 sults of the investigational work, however, that have become evident 

 during the year are here summarized. 



PLANT PATHOLOGICAL INVESTIGATIONS. 



Citrus-canker eradication. — Cooperative arrangements have 

 been made with State officials of Florida, Texas, Louisiana, Missis- 

 sippi, Alabama, Georgia, and South Carolina to insure the thorough 

 inspection of nurseries and citrus groves for the purpose of promptly 

 and completely eradicating citrus canker. In outlining plans for the 



