538 INDEX. 



Pag. 



Apparatus, chemical laboratories, studies 233 



Apple grades, establishment, progress 437 



Apples, insects injurious, investigations 250-252 



Appropriations 



Agriculture Department, 1919 and 1839-1919 299, 301-302 



insular experiment stations, 1919 360 



Aracacia, promising vegetable for Southern States 159 



Arizona, road projects approved, 1918, 1919. .., 401, 403, 405, 407 



Arkansas, road projects approved, 1918, 1919 401, 403, 405, 407 



Arlington Farm, bulb growing, Easter lilUes 149 



Army 



cooperation of Entomology Bureau 250 



worm. Northern, outbreak and control 248 



Arsenate 



cal cium . See Calcium arsenate 



lead, insect control 252, 253, 254, 257, 267 



Asparagus, canned, danger of Bacillus botulinus 222 



Aspergillus spp. , studies 229 



Attorney General, forestry opinion, importance 479 



Autopsies on wild animals 123 



Avocados, growing, varieties 141-142, 157-158 



Bacillus 



botulinus, danger in canned asparagus 229 



botulinus, experimental studies 121 



subtilis, relation to animal influenza 120 



Bacteriolo^, dairy 97 



Ballast, ship, spread of plant enemies, possibility 530 



Bamboo, growing and uses in South , 159 



Banana disease, control, Hawaii 362 



Barberry, eradication work, 1919 168-169, 386, 521-522 



Barley 



breeding and variety testing, and diseases, study 151, 153, 169 



leaf rusts, control 169-170 



storage, concrete and steel bins 443 



Barnett, Claribel B., report as Librarian 337-352 



Beans 



insects, injurious, control 257 



proteins, study 220 



velvet, new varieties 151-152 



weevils, investigations 249 



Beaver, mountain, habits and control 281 



Bee culture, investigations 267, 269-272 



Beef- 

 cattle, breeding and extension in South 80-82 



production 



forecasts, 1919, and estimates, 1910-1919 5, 8 



increases in Southern States 80-82 



Bees, diseases, investigations and publications 271 



Beet, sugar, leafhopper, investigations 257 



Beetle 



Japanese 



eradication work 254 



introduction, spread, and quarantine enforcement 517, 529 



Western pine, studies 259 



Beetles 



flour, investigations 249 



tree, epidemic, investigations 258 



Beets, sugar, growing, farm records, labor, etc 465 



Belgium, cattle shipments to 110 



Beltsville farm, experimental work, animal industry 80, 84, 85, 87, 89, 100, 101 



Bent, Rhode Island, harvesting for seed 157 



Benzene, sulpLonation studies 231 



Bethesda Experiment Station work, 1919 134-135 



Beverages, studies by Chemistry Bureau 223 



Bibliography, work of library and branch libraries 343-345 



Binder twine, fibers, work of 1919 154-156 



