INDEX OP SUBJECTS. 



8Vl 



Page. 



Oats, varieties, S.Dak 334 



Wyo... 535 



resistant to rust 234,340 



wUd, studies, S.Daii 640 



yields, methods of increasing 448 



Ochropsora sorbi, studies 346 



Odonata, bibliograpliy 557 



of Nortli America 354 



tlie neotropical region 753 



Odynerus nigripennis , notes, Hawaii 655 



(Echalia grisea, notes, Hawaii 656 



(Edemagena tarandi, notes 661 



remedies 98 



CEnothcra laviarckiana, a Mendelian hybrid. . 27 

 mutation of, studies.. 141 



spp., studies 141 



(Esophagostoma inflatum in cattle 785 



CEstrid'E, notes 98 



Ohio State University, notes 490 



Station, financial statement 799 



notes 95,194,297,496,690 



report of director 799 



Oidium of Japanese euonymus, notes 252 



parasitism 352 



treatment 749 



Oidium qucrcinum gemmiparum, notes 748 



tuckcri, notes 350 



Oil emulsions, insecticidal value, U.S.D.A.. . 202 



foreign, identification in paprika 198 



fruits, analyses 309 



manufacture from grape by-products 707 



of bitter almonds in Ccntaurea aspcra 431 



palms, treatise and bibliography 546 



role of, in development of dates 029 



{See also specific kinds.) 



Oils and fats, treatise 413 



color reactions for 310 



cruciferous, detection in oil mixtures 11 



edible, detection of rape oil in 11 



essential, determination 512 



loss from tea 41 



examination 567, 667 



illuminating, examination, N. Dak 666 



inspection in V.'yoming 463 



methods of analysis 198, 410 



volatile, production in United States, 



U.S.D.A 414 



Oklahoma College, notes 297, 400 



Station, notes 297, 400 



Oleander twig galls, notes 652 



Oleomargarine, examination 125, 764 



legislation concerning 382 



methods of analysis 515 



f. butter, discussion 463 



Oligotrophus ischasmi n.sp., description 104 



Olive disease, new, description 49 



diseases, studies 7.52 



flies, remedies 59 



oil, adulteration, U.S.D.A.. 171,204,464,567 



examination 667, 764 



methods of extracting 215 



misbranding,U.S.D.A 171, 



204, 364, 567, 764 



twig galls, notes 652 



wild, notes 55 



relation to white fly, Fla 3.55 



Olives, adulteration, U .S.D . A 171, 204, 364 



Page. 



Olives, drought resistance in, U.S.D..\ 442 



fertilizer experiments 40 



insects affecting 752 



new method of grafting 545 



sterility in, studies 721 



Omphale metallicus, notes, Hawaii 055 



Omphisa anastomosalis , notes, Hawaii 055 



One for All, tests, Conn. State 553 



Onion maggot, notes, Mont 255 



seed, examination, Mass 237, 247 



phorid fly afieeting, Conn.State . 750 



thrips, studies. Mass 254 



Onions, analyses and bibliography 12 



fertilizer experiments 640 



growth as alTeeted by electricity 332 



sulphur compounds of '. 12 



Oosporn scabies. {See Potato scab.) 

 Opaque objects, apparatus for photographing, 



Nev 494 



Ophiobolus graminis, studies 551 



Ophionectria coccicola , description 240 



Ophrya leucostoma, notes 755 



Opwssum farming in Australia 074 



Opsonic immunity to Staphylococcus aureus. . 779 



Opsonins, value in tuberculosis immunity. . . 283 



Opuntiafulgida, nutritive value, Ariz 767 



spp. , destruction by cocliineal insect 559 



Orange diseases, studies 157, 650 



extract, adulteration and misbrand- 

 ing, U.S.D.A 364 



gases, effect on bananas 39 



girdler weevil, notes 354 



scale, notes 461 



thrips, notes, Ariz 749 



tortrix, studies 457 



withertip, studies 747 



Oranges— 



as affected by cement dust 722 



culture experiments 537 



insects affecting 157, 163 



r.R 162 



malnutrition diseases of 525 , 722 



Mediterranean fruit fly affecting 255 



navel, bud variation and selection 737 



Sclerotinia sp. affecting 49 



trifoliate, relation to white fly, Fla 355 



Orchard — 



brown mite, studies. 461 



diseases, studies 246 



treatment 653 



N.Y.Cornell 550 



grass, culture experiments 731 



notes. Mo 236 



seed examination, Mass 238 



varieties 731 



inspection. (See Nursery inspection.) 



inspectors in Pennsylvania, reports 255 



management, treatise 39 



planting, studies, Mich 149 



Orchards- 

 apple. (See Apple orchards.) 



demonstration, in Pennsylvania 255 



establishing and managing 149 



green manures for, U.S.D..\ 239 



insects affecting 56 



Mass 254 



model plan 149 



