1920] 



INDEX OF SUBJECTS. 



973 



Ohio — 



State University, notes, 399, 900. 



Station, monthly bulletin, 397, 798. 



Station, notes, 399, 700, 900. 



Station, report, 397. 

 OXdium — 



leucoconium on peach, 349. 



sp., new leaf diease of Hevea, 49. 

 Oil- 

 cakes, feeding value, 573. 



cassia, determination of lead in, 14. 



coconut, rancidity of, 201. 



from coclile-bur, analyses, 801. 



from Momordica seeds, analyses, 316. 



from Pappca seeds, analyses, 801. 



from .soy beans, composition, 610. 



meal. (See Linseed meal.) 



of chenopodium, composition, 502. 



of Rubleva multiflda, analysis, 502. 



palm disease, 849. 

 Oils— 



and fats, analyses, Conn.State, 859. 



and fnts, production from oil seed 

 plants, 638. 



essential, from apples, 711. 



essential, iodln number deflned, 315. 



essential, substitutes in Germany, 204. 



for lubrication of tractor engines, se- 

 lection, 89. 



hydrogenation. discussion, 416. 



industry in France, 261. 



iron content, 202. 



lubricating, effect of dilution, 86. 



measurement of viscosity for wood 

 treatment, 283. 



refined, sampling and examination, 805. 



rancidity, cause and nature, 201. 



saponification number determinations, 

 505. 



substitutes In Germany, 204. 



vegetable, handbook, 240. 



(See also Fats, and Corn oil, Cotton- 

 seed oil, etc.) 

 Oklahoma — 



College, notes, 200, 498. 



Station, notes, 200, 400, 498. 



Station, publications available, 496. 



Station, report, 98. 

 Okra as trap crop for cotton bollworm, 51. 

 Oloomargarln, production, U.S.D.A., 179. 

 Olive production in Spain, 439. 

 Olives — 



canned ripe, botulism from, 865. 



dodder affecting, 652. 



pollination experiments, 239. 



ripe, poisoning, summary, 168. 



ripe, processing, 316. 

 Olive-wood ashes, analyses, 324. 

 Onion — 



downy mildew, notes, 243. 



market, U.S.D.A., 595. 



red root, notes, 243. 



Rhizoctonia disease, studies. Wash., 

 750. 



seed production, Ind., 339. 



62212°— 21 7 



Onion — Continued. 



smut, control, 153, 654. 



thrips, dusting for, 451. 

 Onions — 



anaylses, 03. 



Bermuda, grades, U.S.D.A., 385. 



insects affecting, 450. 



malnutrition of, Ind., 345. 



northern-grown, grades for, U.S.D.A., 

 236. 



.sun-dried vitamins B and C In, 63. 

 Ontario Agricultural College, notes, 400. 

 Oospora &cabiea. (See Potato scab.) 

 Oozotivum omtiivorum, studies, U.S.D.A., 153. 

 Ophiobolus (jraminis, notes, 152, 243, 347, 



750. 

 Ophthalmia — 



recurrent, bacterial flora in, 472. 



specific, studies, 472. 

 Opius fletcheri, parasitism by, 455. 

 Opuntia — 



fulgida, perennation and proliferation 

 of fruit, 328. 



spp., studies, 222. 

 Orange — 



bud abortion, relation to June drop, 247. 



diseases In Cuba, 448. 



diseases, notes, 243. 



Juice, analyses, 203. 



juice, antineuritic and growth-promot- 

 ing value, 460. 



Juice, antiscorbutic value, 667. 



Juice, dried, antiscorbutic value, 460. 



Juice, vitamins A and B In, 765. 



juice, vitamin C as affected by heat, 567. 



June drop, 247. 



root rot, studies, 48. 



stocks, studies, 838. 

 Oranges — 



beetle attacking, 456. 



culture in Bombay, 745. 



dlgitiform, notes, 818. 



fumigation experiments, 54. 



navel, citrus blast affecting, 156. 



spraying experiments, 157. 



stored, changes in sugar content, 203. 

 Orchard — 



grass, culture experiments. Wash., 436. 



horse disease, 473. 



Inspection. (See Nursery inspection.) 



management, 8?,H ; Ind., 337 ; Mich., 

 649 ; Ohio, 340, 648 ; Oreg., 145. 



management in New York, U.S.D.A., 649. 



management in Nova Scotia, 438. 

 Orchards — 



cover crops for, Ind., 338 ; Pa., 538 ; 

 Wash., 743. 



fertilization, 744. 



fertilizer experiments, 645 ; Ind., 337 ; 

 Ohio, 339 ; Oreg., 145. 



fertilizer experiments, interpreting re- 

 sults, 645. 



pruning experiments, Ohio, 339. 



rejuvenation, Ohio, 647. 



shade crops v. fertilizers, Oreg., 146. 



I 



