INDEX. 543 



Dairy — 



Division— Page- 



Library, work, 1919 344, 347, 348, 319 



specialists, cooperative work 386 



experiment farm, Belts^ille, Md., work, 1919 100 



herds, disease suppression 92-93 



products — 



market news service -149 



marketing 110 



production, stimulation 93-94 



studies by Chemistry Bureau 213, 222-223 



research laboratories, work, 1919 97-100 



work and investigations, 1919 90-101 



Dairying, community, development 92 



Dasheen, marketing, prices, distribution, and production 159 



Dates, growing in California 145 



Deaths of Department employees in war 391 



Dehydration, fruits and vegetables 22-1-225 



Delaware, road projects approved, 1 918, 1919 401. 403, 405, 407 



Demonstration work — 



county agents, South, North, and West 369-374, 377 



Entoruology Bureau 266-267, 269 



insular stations 362, 364, 365 



Demonstrations — 



farm -management in the Southern States 468 



grain grading methods : 457 



"Derris," insecticide, value 254 



Dietary sur\^ey, work of Home Economics Office 388 



Dips, animal, investigations 127 



Dirigible, British, flight, aid of Weather Bureau 55 



Diseases — 



animal, investigations and control work, 1919.... 74:-76, 102-103, 110-132, 13-4-135 



bee, investigations and publications 271 



gipsy and brown-tail moth, progress 265 



plant, investigations, 1919 168-176 



Disinfectants, investigations 1 27 



District of Columbia, plant quarantine, need 532 



Documents, distribution work. Publications Division, 1919 319-322 



Dogs, tapeworms, control studies 132 



Dourine, eradication work, 191 9 Ill, 121 



Doves, white-winged, habits, damage to seed grain 285 



Drainage investigations, 1919 416-417 



Drug plants, investigations 159-160 



Drugs— 



adulteration and misbranding, cases of interest 484-487 



crude, detection, researches 217, 227 



imported, inspection 217-218 



investigations, inspection, etc 213-218, 227-228 



medicinal, adulteration 217 



toxicity, testing on rats 227 



See also Food and Drugs Act. 



Drying fruits and vegetables 224-225 



Ducks, wild, rice depredations, California 286-287 



Dust preventives, research 421 -422 



Dusting insecticides for peach insects, experiments 253 



Dyes, investigations, etc 216, 231 



Eagles, destructive habits 287 



Earthquakes, investigations, Weather Bureau work, 1919 71-72 



I'^astern States, forest lands, acquisition by National Forests 182 



Economics — 



farm, projects and studies in Farm ^Management Office 27-29 



homework, 1919 387-389 



live-stock, studies. Farm Management Office 465 



Editorial work- 



PuMications Division. 1919 317 



States Relations Service 355-358 



Education, veterinarians, requirements 133-134 



