974 



EXPERIMENT STATION EECORD. 



Page. 



Oils for internal combustion engines 892 



hylrogenation 413, 459 



laboratory handbook 811 



mineral, as aflected by added oils 488 



miscible, effect on dormant trees 354 



Oxygen absorption by 613 



vegetable, bromin absorption by 612 



hydrogenation 413 



oflndia 413 



wood preserving, antiseptic tests 111. 



Oklahoma College, notes 196, 398, 900 



Station, notes 398 



Okra, insects affecting 653 



Oleaginous fruits, formation of fats in 201 



Oleander canker, description and treatment. . 156 



scale, notes 654 



Oleaster, Russian, notes, Ariz 441 



Oleomargarine law in Illinois 61 



manufacture 770 



Olive oil, bleaching and decolorization 118 



detection 613 



production ia Spain 439 



Olives as aflected by cold storage 340 



culture, Ariz 420 



preservation by lactic-acid fermenta- 

 tion 117 



production in Spain 439 



Onion flies, notes, U.S.D.A 454 



maggot, imported, notes, U.S.D.A 454 



smut, description and treatment 245 



spot disease, treatment 245 



thrips, description and remedies, 



U.S.D.A 453 



notes 252, 558 



Onions, ash analyses, Ohio 861 



Bermuda, culture experiments, Can. 235 

 composition as aflected by sodium 



salts, R.I 419 



culture experiments, U.S.D.A 137 



in Burma 736 



growth as aflected by sulphur 215 



insects affecting, U.S.D.A 453 



irrigation experiments, P.R 638 



sugar content as affected by drying, 



R.I 419 



value in the diet 664 



Ontario County, N. Y., soil survey, U.S.D.A.. 16 



Good Roads Association, proceedings. 291 



Ooencyrtus sp., notes 658 



Oophorectomy, paper on 500 



Oospora scabies. {See Potato scab.) 



Opatrum crenatum, notes 858 



sp., notes 853 



Ophiobolus herpotrichus, notes 244 



sp., notes 243 



Ophionectria cocckola, notes 852 



Ophthalmic reaction, diagnostic value for 



contagious abortion in cows 586 



Ophthalmology for veterinarians, treatise 377 



Opiusn. sp., description 3.59 



(JJtetes) anastrepUxn. sp.,noiBS, P.R... 652 



Opuntia parvula as a host of mistletoe 352 



Orach, insect and arachnid enemies of 853 



Orange black rot, notes 248 



gummosls, notes and treatment 351 



Orange maggot, notes 759 



melanose, investigations, Fla 242 



peel, pectins of 608 



rot, studies, U.S.D.A 248 



Oranges, changes in during ripening, Fla 641 



culture 745 



Florida, composition, U.S.D.A 462 



packing experiments, P. R 637 



sugar and acid content, Fla 641 



Orang-outangs, chromatin bodies in erythro- 

 cytes of 478 



Orchard- 

 grass as affected by number of cuttings ... 431 



culture experiments 631 



in the Ozarks, Mo 427 



seed, adulteration and misbrand- 

 ing, U.S.D.A 144 



seeding experiments on ranges, 



U.S.D.A 531 



varieties 139 



yields, Mont 631 



heaters, tests, Oreg 147 



industry in California 639 



South Australia 837 



Utah 342 



inspection. (See Nursery inspection.) 



survey in Ontario 41 



Orchards- 

 apple. (See Apple orchards.) 



cover crops for 395 



Nev 147 



culture on Yuma reclamation project, 



U.S.D.-l 226 



demonstration, role in horticultural edu- 

 cation 41, 94 



insects affecting, Oreg 158 



iiTigation and drainage 745 



management, N.Y. State 339 



planting by use of explosives 183 



protection against frost, Nev 147 



rejuvenation, W. Va 745 



spraying experiments 354 



Me 145 



Orchid corms or tubers, dried, analyses 463 



Oregon College, notes 197, 300, 900 



Station, notes 98,197,300 



Organic matter — 



effect on soil temperature, Mich 619 



increasing in soUs, U.S.D.A 540 



relation to micro-organisms in soils 315 



Ornamental plants, shrubs, or trees. (See 



Plants, Shrubs, and Trees. ) 



Ornamentals, culture in western Nebraska. . . 546 



Ornithodoros megnini, notes 470 



savignyi, relation to recurrent 



fever 479 



Ornix geminatella, notes 655 



Orobanche cumana, notes 851 



Orthoclase, decomposition by bacteria 316 



Orthorrapha, mouth parts and sucking appa- 

 ratus of 760 



Orthorrhinus Muggi, injurious to roses 658 



Oryctcs spp., notes 858 



Osage orange rubber, notes 546 



Osiers, insects affecting 853 



