INDEX. 995 



Pa&e. 



Oberly, Eunice R., report as Librarian of Plant Industry Bureau, 1911 676-678 



Object-lesson roads construction 1905-1911, materials and square yards 717 



work of 1911 715,716-737 



Observations Division, Weather Bureau, establishment, scope, etc 171-175 



Obser\'utory buildings, Weather Bureau, owned and rented, 1911 186-188 



Mount Weather, work, 1911 155-161 



Occupancy trespasses. National Forests, prosecutions 791-793 



Ogden, E. Lucy, report as Librarian, Experiment Stations Office 680-681 



Ohio Experiment Station, work in plant breeding 135 



tobacco investigations 296 



Oil, effect on mortars and concretes, investigations 740 



Oiled-asphalt gravel road, 1911 719 



Oiled-gravel macadam road ,1911 719 



Oil-mixed concrete, roads, 1911 720-722 741 



See also Concrete. 



Oils, animal, export, note 21 



edible, studies 444 



essential, inspection work 431 



use in flavoring products, investigations 440 



volatile, investigations 276 



Oil-yielding plants, growing, work in Florida testing garden 276 



Oklahoma, drainasre surveys, 1911 708 



road building, 1911 730-731, 735 



systems, model, recommendations 748 



Oleaster, Russian, value in desert regions 299 



Olives, unwholesome, investigations 428, 441 



Olmsted, Victor H., report as Chief of Statistics Bureau, 1911 639-656 



Omaha, food-inspection laboratory work 432—433 



Onion, Denia, experiments, profits, etc 320 



growing, Arizona Indian Reservation, cooperative work 269 



Guam, note 703 



Spanish, experiments, profits, etc 320 



thrips, study 520 



Onions, exports, note 24 



studies 320 



Orange, damage by Argentine ant, note 506 



groves, insect pests, control work of Entomology Bureau 112-113 



insects, studies 520-521 



thrips investigations 521 



white fiy, control operations 501 



Oranges, handling methods, investigations 65 



Orchard fertilizers, study 138 



Orders, departmental, in regard to publication work 623-625 



Secretary's, during fiscal year 1911 801-813 



Oregon, road building, demonstration, 1911 '. 735-736 



Original packages, decisions under Food and Drugs Act 765, 769 



Ornamental nursery stock, imports, danger 528 



plantings. Department grounds 332 



plants, importations, danger 525 



Ornithology, economical work, outline for 1912 548 



Oyster industry, investigations 449-450 



Page, Logan Waller, report as Director of Public Roads Ofl^ce, 1911 715-758 



Palmer, T. S., report as Librarian of Biological Survey, 1911 671 



Paper, quality used in publications, 1911 626 



tests by Chemistry Bureau 464-^65 



wood-pulp, investigations 411-412 



Paper-making materials, investigations 464-465 



Paper-plant investigations 68, 283-284 



Para grass, value for growing in Guam 703 



Paralysis, guinea pigs, caused by newly-discovered bacterium of milk 255 



Parasites against brown-tail moths, remarks 500 



alfalfa weevil, note 515 



animal, general investigations 253 



beneficial, introduction Ill, 112, 113, 115 



boll weevil, remarks 504 



