546 INDEX. 



Food Continued. Page. 



supply investigations '. 429 



surveys, work of Markets Bureau 43g 



Foods 



adulteration and misbranding, cases of interest 484-487 



digestibility, studies 388 



fermentation, studies 229 



imported, inspection 217-218 



spoilage and fermentation, studies by Chemistry Bureau 229 



Foodstuffs, exports, 1910-1919, discussion and statistics 5, 9 



Foot-and-mouth disease, outbreaks and control 74, 76, 112 



Forage crops 



experiments I57 



insects injurious, investigations 247-249 



Forecasts, Weather Bureau, 1919 52-56 



Forest 



products, research investigations : 204-210 



resources 



depletion '. 178 



Service 



cooperation with live-stock associations 193 



cooperation with States, in fire protection 203-204 



library, work, 1919 343, 346, 348, 349 



personnel, changes 179-181 



report, 1919 177-210 



specialists, wood selection, cooperative work 385 



Forester, report, 1919 177-210 



Forestry 



court decisions of interest 478-479 



extension, problems and needs 24-25 



litigation, general, work of Solicitor, 1919 477-478 



practice, extension to private forest lands 177-179, 210 



Forests- 

 insects, investigations 258-260 



investigations 209-210 



National 



areas, eliminations and increases 182-183 



improvements, value 202 



increased acreage by acquisition and exchange 25 



legal work, office of Solicitor 472-473, 476^79 



receipts, expenses, areas, protection, and management 181-202 



reforestation of denuded lands, by States 189 



roads, mileage and cost, by States 409^11 



protection, expenditures, fire damages, extent and cause 183-186 



special uses, receipts, 1919 181 



Foundations, road and bridge, tests. Roads Bureau, 1919 423 



France, cattle shipments to 110 



Freezers, fish, investigations. 1 222 



Frost warnings, work of Weather Bureau, 1919 50, 53, 66 



Fruit- 

 flies, distribution, studies 262-263 



fly, Mediterranean, control work 262 



Fruits- 

 deciduous, insects injurious, investigations 250-255 



drying- 

 demonstrations, Hawaii experiment station 362 



experiments 224-225 



frozen, handling methods 439 



growing and use, Porto Rico 364 



market 



grades, studies 437-438 



news service, reports and stations 439-440, 446-447 



subtropical, investigations, 1919 141-145 



transportation and storage, protection 438-439 



tropical and subtropical, investigations 260-261 



Fumigation 



citrus trees, experiments 260, 261 



control of stored-product insects 250 



