INDEX. 409 



Drainage — ^ Page- 

 districts, organization, State laws 311 



investigations, 1915, and review, 1902-1915 309-311, 325 



investigations, transfer to Roads Office 295, 313, 325 



run-off and cost, investigations 310 



Drug — 



control work, distribution of data to State officials 197 



samples, collection and examination 197-198 



Drugs- 

 imports, samples, examinations 198-199 



samples, examination by Chemistry Bureau 199-200 



See also Food and Drugs Act. 



Dry-land agriculture — 



cooperative work, substations, etc 150-151 



new stations, establishment 151 



Ducks, wild — 



food, studies 237 



oysters destruction, control studies 237 



Utah, mortality causes, study 236-237 



Dust explosions — 



grain losses, cooperative control studies 194 



grain thrashing and milling, cooperative Btudies 194 



Dust sprays, experiments 214, 215 



Dyes, use in foods, studies 194 



Dynamometer, construction by Roads Office 325 



Earthquakes, occurrence, January 1 to June 30, 1915, records 73 



Economics, home, investigations 311-312 



Editing, work of Publications Division, 1915 264-265 



Editor, report, 1915 253-273 



Education — 



agi-icultural— 



provisions of cooperative agricultural extension act 38 



stud}^ courses, etc 298 



rural, activities 391-392 



Eggs- 

 handling, shipping, etc 193, 196 



infertile, production, advantages 90 



production, experiments with hens 88-89 



regulatory legislation, Illinois and Kansas 196 



Elk- 

 distribution in National Forests 174 



increase in National Forests 174 



preservation work, Wyoming 243-244 



Elm, Chinese dry-land, adaptabiUty to northern plains region 153 



Emery, James A., report as member of Insecticide Board 347-350 



Employees, misconduct charges, examination by Solicitor 331 



Engineering — 



field. Roads Office, work of year 314-319 



liighway, instruction 316 



Entomologist, report, 1915 211-231 



Entomology Bureau — 



cooperation with other bureaus 193 



cooperative work for Insecticide Board 350 



work, 1915, report of Entomologist 211-231 



Equipment, household, relation to loss of labor, studies 312 



Ergot, determination in flour 194 



Erosion, soil, causes, investigations 209 



EsTABROOK, Leon M., report as Chief of Crop Estimates Bureau 275-281 



Estimates, Crop. See Crop Estimates. 



Estimating crop and live-stock production, improvements 280-281 



European war, effect on prices of agricultural products, note 3 



Evaporation, measurement, operation of new station in D. C, etc 62-63 



Evetria buoliana, quarantine 353 



Exhibits, road, work, location, attendance, etc 322 



Expenditures, Agriculture Department, 1915, and 1839-1915 249, 251 



Experiment station, Bureau of Animal Industry, work 137-140 



