INDEX TO YEARBOOKS, 1901-1905. 119 



Plowing, fall, and depth of plowing in corn growing, 1903, 183-184. 

 desirability for sugar beets, 1903, 404. 

 furrows for irrigation, remarks, 1903, 245. 



f rapes, planting and cultivating, remarks, 1902, 410. 

 emp. 1901, 545. 

 more frequent and deeper, need in South, discussion, 1903, 165. 

 on hillside, method to prevent soil washing, 1903, 179. 

 potatoes in Colorado, note, 1904, 317. 

 preparation for corn planting, 1903, 184. 

 proper condition of soil, note, 1904, 174. 

 ridge-and-furrow method, dangers, 1903, 162. 

 special preparation for corn planting, 1903, 184. 

 value and methods in insect suppression, 1905, 469-471. 

 Plows, kinds in use in Colorado potato culture, 1904, 318-320. 

 Plum curculio beetle, injuries to fruit, 1905, 327. 



control, preventive measures, 1905, 328-330. 

 da,mage8, 1901, 676; 1902, 731; 1903, 565; 1904, 604; 1905, 633. 

 origin, life history, habits, injuries, enemies, and remedies, 1905, 325- 

 330. 

 diseases, review for year, 1901, 670; 1902,716; 1903,551; 1904,583; 1905,605. 

 flowering tree in Japan, remarks, 1902, 160. 

 Golden, origin, name, and description, 1905, 500-501. 

 red June, history, description, and features recommending, 1901, 386. 

 trees, effect of rich supply of nitrogen, 1901, 170. 



vigor, modification by top working, 1902, 247. 

 Wickson, history, description, and features recommending, 1901, 387. 

 Plums, breeding, note, 1904, 121. 



damson, demand, varieties, with origin, description, etc., 1905, 501-503. 

 losses by injuries in handling, 1905, 354. 

 methods of obtaining self-rooted trees, 1902, 248. 

 pears, etc., notions, 1904, 420-421. 



two promising new kinds, discussion, limit of resistance to cold, 1902, 477—479. 

 Plushes of mohair, demand for passenger cars, 1901, 282. 

 objectionableness of kemp, 1901, 276. 

 Poison, corrosive sublimate, caution and antidote, 1903, 433. 

 danger to stock from castor pomace, 1904, 291. 

 in drinking water, relation of pollution by algse, 1902, 186. 

 Poisoned grain, use against meadow mice and rabbits, 1905, 373. 

 Poisoning as method of destroying prairie dogs, 1901, 266. 

 sheep, on stock ranges, new remedy, 1902, 22. 

 use as remedy for plum curculio, 1905, 329. 

 Poisonous plants, danger to stock, remarks, 1904, 49. 



investigations, 1905, 49. 

 Poisons, weevil, difficulties in use, 1904, 304-305. 

 Poke, cultivation, 1905, 536. 

 Poles, telephone and telegraph, preservative treatment, 1903, 439. 



See also Telephone poles. 

 Pollen, cotton, abundance and relation to cross-fertilization of seed, 1902, 370. 

 Pollination, cross, tobacco, 1904, 447^48. 



of corn, removal of tassels in seed production, 1902, 548. 

 wind, 1902, 541-542. 

 Polyembryony, citrus fruit, relation to breeding, 1904, 226. 

 Polygala senega, scarcity, demand, 1903, 338, 339; 1905, 535. 

 Polymerization, formaldehyde, relation to disinfection, 1905, 480, 481. 

 Pomace brandy, making, 1904, 377. 



castor, danger to stock, and yield from bean, 1904, 291-292. 

 grape, products, 1904, 377. 

 Pome fruits, diseases, review for year, 1901, 669; 1902, 715; 1903, 550; 1904, 582-583; 



1905, 603-604. 

 Pomelo, crossing with tangerine, notes, 1904, 122. 

 Pomological investigations, advances, 1905, 46-49. 



work. Bureau of Plant Industry, 1901, 31; 1902, 25-27; 

 1903, 38-41. 

 Society, American, remarks, 1905, 620. 



rule for fruit competition, note, 1903, 556. 

 Pomology, American, growth, 1903, 225. 



special problems, note, 1902, 27. 



