Index 699 



Page 



Oaks, the 475 



Oat smut 394 



Oats, co-operative tests 78 



Ogden, Prof 420 



Oil sprays 80 



Oils for spraying 179 



Onion, the 656 



Onion blight • 172 



Onion insect enemies 172 



Opperman, C. L 185 



Oranges 505 



Orchard cover crops, co-operative tests 78 



Orchard, fighting fungi in 391 



Orchard surveys 41 



Over-run in dairying, experiments 81 



Owl, the 533 



Oyster-shell bark-scale, spraying . . . .• 48 , 80 



Pansy, the 466 



Paragrene ] 75 



Paris green, formula, 174 



Parsnips for stock-feeding 85 



Pastures, renewal of 77 



Peach, the 478 



Pea, the 510 



Pea root-rot investigations 52 



Pea weevil 510 



Peach diseases 172 



Peach insect enemies 172 



Peach leaf curl 393 



Peach yellows 42 



Peony diseases 53 



Peony, monographic study 41 



Pear, the 478 



Pear diseases 173 



Pear insect enemies 173 



Pearson, R. A., co-operative experiments with 81 



Pearson, R. A., report of 44 



Peas, canning 420 



Peas and oats, co-operative experiments 76 



Pepperidge tree, study of insect infesting 47 



Petroleum oil sprays 179 



Phosphoric acids 345 



Pigeons 491 



Pigeons as playfellows 657 



Pink rot 170 



Plant breeding, co-operative tests 78 



Plant colonies 675 



Plant diseases, co-operative experiments 82 



Plant disease survey 53 



