510 INDEX. 



Page. 



Graves, Henry S. , report as Forester 165-200 



Grazing permits. National P^orests, 1918, and management of livestock. . 166, 183-187 



Great Plains, dry farming, cooperative work, 1918 145 



Greenhouse, insects, investigations 247 



Greensand, value as source of potash, studies 158-159 



Guam Experiment Station, work, 1918 349-350 



Gutierrezia diver siolia, sheep poisoning, investigations 118 



Hair, animal, supply, reports 476 



Hawaii Experiment Station, work, 1918 346-348 



Hay, market news service, work, 1918 22, 477-478 



Haywood, J. K., report as Chairman, Insecticide and Fungicide Board 425-430 



Health- 

 insects affecting, investigations 243-244 



rural, safeguarding, importance and neec's 53-54 



Hemp, varieties, and progress of industry 161-162 



Herds, cattle, tuberculosis-free accredited Ill 



Hessian fly, control, progress 239, 248 



Hides, disinfection, methods 121 



Highway maps, preparation by Roads Bureau 374, 381 



Highways — 



Council, United States, composition and work 40-41 



construction, work of Roads Bureau 39-41, 49-50 



State expenditures, 1918, statistics collection 382 



surveys, models, and exhibits, 1918 381-383 



United States Council, cooperation with Roads Bureau 374 



Hog- 

 lice, control 123-124 



mange, investigations and control 123 



roundworms, investigations and control 125 



Hogs^- 



breeding and feeding, work, 1918 72, 77-78, 82, 132 



increase on farms 128 



joints, inflammation, investigations 115 



losses, decrease under hog-cholera control 128 



numbers, increase since 1914 6, 8 



raising on reclamation projects, demonstration work 149, 150 



Home — 



demonstration work with farm women and girls 355-356, 366-367 



economics, work, 1918 369-371 



insect pests control, studies, and bulletin concerning 429-430 



Honey, production increase 250 



Horses — 



American carriage, breeding, work of Department 83 



Army, breeding, work of Department 83 



breeding, work of Department 83 



grazing in National Forests, numbers 187 



intestinal nematodes, investigations 125 



number, increase since 1914 6, 8 



wild, injury to ranges in National Forests 185 



Horticultural Board, Federal, report of Chairman 431-449 



Houston, D. F., report as Secretary of Agriculture, 1918 3-54 



Howard, L. 0., report as Entomologist 233-256 



Hydrocyanic acid, liquid substitution for gas, experiments 246 



Idaho — 



ground squirrels, eradication work 261 



Thunder Mountain Country, forestry conditions memorial, citation 174 



Illustrations, work of Publications Division, 1918 297-301 



Importations — 



birds and mammals, 1918 271-273 



nursery stock — 



origin and destination 441-443 



restrictions 29 



Imports, foods and drugs, substitutions and adulterations 207 



Inbreeding, animals, studies 86 



Indexing, work of Publications Division, 1918 296-297 



