1918] 



INDEX OF SUBJECTS. 



971 



Onions — Page. 

 Bermuda, seed production, 



U.S.D.A 344 



effect on succeeding crop 337 



fertilizer experiments 540 



fertilizer experiments. Mass 218 



Oospora scabies. (See Potato scab.) 



Ophidcrma spp. in United States 764 



Ophiobolus graminis, notes 48, 648 



OphiochcEta (Ophiobolus) graminis 



n.comb., notes ^ 648 



Ophionectria coccicola on purple 



scale 157 



Ophyra nigra, notes 466 



Opisthorchis felinus, infection of 



pigs with 82 



Opium poppy blight, studies 547 



Opius — 



humilis, studies, U.S.D.A 659, 767 



n.spp., descriptions 165 



Orange — 



seeds, oil from 111 



skins, analyses, Conn. State 626 



thrips on olive, Cal 157 



thrips, studies, U.S.D.A 763 



Oranges — 



growth in relation to soil mois- 

 ture 541 



irrigation 541 



manuring, Bahian method 845 



mulching experiments, U.S.D.A- 814 



navel, June drop, Cal 757 



pruning experiments 43 



variability of yield, U.S.D.A 744 



varieties, Tex 40 



yield as affected by humus con- 

 tent of soils, U.S.D.A 814 



Oraniella coffeicola, notes 51 



Orchard — 



grass, liming experiments, Pa — 219 

 inspection. (See Nursery in- 

 spection.) 



products, feeding value, Cal 168 



Orchards — 



cover crops for, Tenn 346 



cover crops for, U.S.D.A 443 



heating experiments. Can 641 



irrigation, U.S.D.A 242 



planting costs 41 



rejuvenation. Conn. State 242 



spraying. Wash 796 



spraying v. dusting 42 



winter work, Wash 69S 



weevil, new, in Milwaukee 155 



Oregon College and Station, notes — 98, 



499, 799 



Organic — 



compounds, toxicity to insect 



eggs, U.S.D.A 858 



matter, decomposition in soil — 117 

 matter, loss in green manuring, 



Ohio 622 



Orientation of small objects In 



paraffin 497 



Ornamental plants, shrubs, or trees. 



(See Plants, Shrubs, and Trees.) 



Ornithodoros talaje in Minnesota 566 



Orobanche spp. — Page. 



in Bihar 547 



on tobacco in Roumania 452 



Orosiotea n.g. and n.sp., description. 857 



Ortalid, new, from Philippines 767 



Orthoptora of southern Italian 



Somali 460 



Oryctes nasicornis, investigations 163 



Osage oranges for dairy cows, Ky 680 



Oscinella frit, control in Kief 257 



Oscinus frit, notes 460 



Osmotic — 



cell, artificial, new type 125 



pressure in animals and plants- 821 

 pressure of Jamaican mountain 



plants 125 



pressure of sap and height of 



leaf insertion 126 



pressure of sap, determination- 523 



Ostrich raising in Morocco 174 



Otiorhi/nchus ovatus, remedies 864 



Ovaritis in cattle 179, 787 



Ox warble fly in Netherlands 563 



Oxalic acid solutions, keeping qual- 

 ities • 412 



Oxidase, effect on anthocyanin 128 



Oxido-reductlon, biochemical phe- 

 nomena 802 



Oxygen — 



requirements of roots of higher 



plants 628 



role in germination of Grami- 



neae 24 



Oysters, bacteriological analyses — 265 

 Ozone — 



absorption bands in spectra of 



sun and stars, U.S.D.A 511 



therapeutic value 585 



Ozonium omnivorum, notes, Tex 334 



Pachyneuron, North American spe- 

 cies 565 



Pachyneuron virginicum, notes 565 



Paddy. (See Rice.) 

 Palaeochenoides mioceanus, relation- 

 ships 556 



Palm — 



bud rot, notes 547 



kernel cake for cattle 167 



kernel meal, analyses 771 



kernel meal, feeding value__ 167, 771 

 kernel oil and coconut oil, dif- 

 ferentiation 413 



nut cake, feeding value 572 



oil products as feeding stuffs, 



Mich 368 



Palms of India and Ceylon 44 



Palmyra palm disease, treatment 351 



Pala;opus dioacorecB n.sp., descrip- 

 tion, U.S.D.A 864 



Panargi/rops pellucidator, notes 768 



Pancreatic ferments, coagulation 710 



Panicum — 



palmifolium as a forage crop, 



Hawaii 827 



spp., analyses and cultural notes 528 



Papain, proteolytic activity 802 



Papaver rhwas, self-sterility 426 



