110 INDEX TO YEARBOOKS, 1901-1905. 



OleagiBous seeds and nuts, France, imports, discussion, 1903, 419-420. 



Germany, imports, exports, 1903, 421-422, 423. 

 Holland, imports and exports, 1903, 423-424. 

 British India and Russia as producers, 1903, 417. 

 Oleomargarin, exports, 1901-1905, 1905, 775. 



use of cotton-seed oil, 1901, 287. 

 Olive as promising tropical crop, 1901, 360. 



oil, imports, 1901, 796; 1902, 859; 1903, 688; 1904, 729; 1905, 770. 

 inspection under fqpd law, 1904, 156-157. 

 mixture of cotton-seed oil, 1901, 287. 

 value and use as food, 1902, 402. 

 orchards, California, losses by ravages of robin, 1904, 252-253. 

 Oliver, George W., preparation of manual on silkworm food plants, 1903, 145. 

 Olives, destructive feeding of birds in California, 1904, 243. 



Olmsted, F. E., article on "Tests on the physical properties of timber," 1902, 533-538. 

 Omaha horses, range of prices, 1902, 833. 

 Onion culture, improvement, 1902, 600. 



diseases, notes, 1901, 671; 1902, 718; 1903, 553; 1904, 584; 1905, 607. 

 exports, 1901, 805; 1902, 869; 1903, 699; 1904, 741; 1905, 781. 

 imports, 1901, 798; 1902, 861; 1903, 690; 1904, 731; 1905, 772. 

 yields under irrigation in Colorado, notes, 1901, 425, 426. 

 Ontario fruit growers, apple score, 1904, 420. 



Oology, destruction of bird life by breaking up nests, remarks, 1902, 208. 

 Opium, content of morphine, requirement by customs service, 1903, 256. 

 poppy, experiments in cultivation, gathering, etc., 1903, 344-345. 

 production from poppy, note, 1904, 32. 

 Orange as promising tropical crop, 1901, 360. 



breeding disease-resistant strains, note, 1902, 382. 



notes, 1904, 121-122. 

 crop, California, note, 1903, 556. 

 diseases, notes, 1901, 670; 1904, 583; 1905, 606. 

 effect of nitrogen, note, 1901, 169. 

 hybrids, between sweet and Citrus trifoliata, success, 1902, 720. 



characteristics, 1904, 226, 227. 

 osage, planting as fence and windbreak, 1904, 261-262. 

 pruning, remarks, 1901, 438. 



sweet, male and female parent in crossing, differences in results, 1904, 225-226. 

 trees, hybrid, trifoliate, remarks, 1901, 673. 

 trifoliate, description of plant, varieties, and fruit, 1904, 224. 



use in breeding hardy citrus fruits, ]904, 224-227. 

 Washington navel, introduction into United States and value, 1905, 294. 

 Oranges, breeding for frost resistance and as hedge plants, 1901, 25; 1902, 20; 1904, 9, 30. 

 color, influence on demand, 1904, 425. 



increase of. export due to exhibit at Paris Exposition, note, 1901, 32. 

 losses by injuries in handling, 1905, 353. 

 new, hybrid varieties, note, 1904, 30. 

 tangerine, new, discussion, 1904, 238-240. 

 Orchard, apple, branch grafted, note, 1902, 252. 

 value of by-products, 1901, 608. 

 cost of establishment, 1904, 179-180. 

 fruits, diseases, study, 1903, 31. 



work in Bureau of Plant Industry, 1901, 24. 

 grass, seed growing and handling, 1901, 245. 

 growing other crops on land, 1904, 174. 

 need of storage house, remarks, 1901, 606. 

 nut, location, relation to weevils, 1904, 307. 

 peach, bearing, cultivation, 1902, 619-621. 

 cultivation, discussion, 1902, 612. 

 fertilization, 1902, 621-626. 

 plow, use in peach growing, 1902, 619. 

 protection by forest belt, 1904, 268. 



from insects and diseases, 1901, 603. 

 regions of United States, location, 1903, 226. 

 top-worked, care, remarks, 1902, 254. 

 top working, time, 1902, 251. 



trees, top working, article by G. Harold Powell, 1902, 245-258. 

 Orcharding, apple, commercial, article by G. B. Brackett, 1901, 593-608. 



