1019] 



INDEX OF SUBJECTS. 



975 



Onions — Continued 



rotation experiments, R.I., 434. 



sodium for, R.I., 426. 



vitamin content, 762. 



wireworm attacit, control, 462. 

 Ontario Agricultural College, notes, 200. 

 Oospoia — 



lactis in banana must, 716. 



scabies. (See Potato scab.) 

 Opliioholus (p'aminis — 



notes, U.S.D.A., 746. 



studies, 655. 

 Ophiodothella flci n.sp., notes, 750. 

 Ophyra leucostoma, flisht distances, 259. 

 Opium soils of India, phosphate require- 

 ment, 816. 

 Opuntia inermis — 



fungus disease, 248. 



utilization and eradication, 735. 

 Opuntia, root growth, oxygen response, 132. 

 Orange — 



juice, concentrated, antiscorbutic prop- 

 erty, 470. 

 juice, dried, antiscorbutic property, 560. 



June drop, notes, 65S. 



psorosis, notes, 658. 



scaly bark, notes, 658. 



stocks, studies, 447. 

 Oranges — 



culture in Sind, 837. 



culture In South Africa, 540. 



navel, pruning, 241, 741. 



navel, selection, 236, 



Satsuma, varieties, 241. 

 Orchard — 



grass, culture experiments, Idaho, 225. 



grass, fertilizer experiments, 229. 



grass, seed production maps, U.S.D.A., 

 236. 



inspection. (See Nursery inspection.) 



management, Colo., 650. 



management experiments, 340, 341 : 

 Kans., 41 ; Mo., 649. 



management problems, 835. 

 Orchards — 



cost of building, 835. 



cover crops for, Kans., 41 : Mo., 649 ; 

 N.H., 44. 



cover crops for peaches, Del., 145, 444. 



dusting experiments, 340, 348. 



fumigation, 754. 



fungus infection in relation to cultiva- 

 tion, 657. 



home, pruning and spraying, Tenn., 

 444. 



irrigation, 515. 



selecting site, N.II., 44. 



spraying experiments, 657 : Conn. 

 State, 158. 



(See also Fruits, .\pples, Peaches, etc.) 

 Orchid — • 



pest, life history, 853. 



weevil, notes. Conn. State, 159. 

 Oregon — 



College, notes, 199, 798. 



Station, notes, 199. 



Organic matter — 



decomposition in soil as affected by 

 root growth, N.J., 28. 



effect on soil reaction, 319. 



effect on tough soils, 720. 



in soils, effect on seed germination, 

 523. 



in soils, relation to solubility, Mieh., 

 512. 

 Orr/ilus dioryetriw n.sp., description, 63. 

 Oriental peach moth. (See Peacli moth.) 

 Ornamental plants, shrubs, or trees. (See 



Plants, Shrubs, and Trees.) 

 Orohanche spp., studies, 543. 

 Orokinase and salivary digestion, 81. 

 Orphania denticaudata, absence of comple- 

 ment in blood, 754. 

 Orthexia insirjnis, notes, 661, 662. 

 Osier production, treatise, 345. 

 Osmotic — 



concentration in desert Loranthacea;, 

 632. 



concentration of tissue fluids, 220, 327. 



pressure in mountain plants, 525. 

 Osterdamia matrella, notes, Fla., 528. 

 Otiorhynchus svlcatus, studies, 59. 

 Ovarian — 



follicle of guinea pig, growth, 768. 



tissue, retention by male birds, 269. 

 Ovaries — 



as affected by underfeeding, 862. 



behavior toward acid-azo stains, 174. 



concrescence of follicles, 862. 



guinea-pig, grafted on males, histology, 

 173. 



relation to uterus and mammary gland, 

 174. 

 Ovulation as affected by corpus luteuni, 175. 

 Ox warble fly, notes, 280, 755. 

 Oxalates, specific color reaction, 504. 

 Oxalic acid, production from alkali-sawdust 



fusion, 314. 

 Oxen of Morocco, tests, 368. 

 Oxidase — 



activities of plants, Del., 132. 



of fresh and dried vegetables, 202. 

 Ox-marrow and ox-tail fats, digestibility, 



U.S.D.A., 65. 

 Oxygen- 

 atmospheric, solution by water, .■>21. 



consumption, measuring, 524. 

 Oysters, zinc and copper content, 464. 

 Oyster-shell scale in South Dakota, 59. 

 Ozonium omnirerum, notes, Ariz., 345. 

 Paddy. (See Rice.) 

 Paints — 



chemistry of, progress, 614. 



methods of analysis, 314. 

 Palau laboratory ware, 11. 

 Palm — 



kernel cake, rancidity, 10. 



kernel fat, determination, 412. 



kernel meal, analyses, Ind., 564, 868. 



kernel oil, iodin value, 412. 



oil and wheat middlings, analyses, 

 N.V. State, 868. 



oil, evaluation, 115. 



