INDEX TO YEARBOOKS, 1901-1905. 115 



Pennsylvania, soil survey, results, 1901, 47. 



soils, areas surveyed, 1905, 619. 

 Sumatra tobacco growing, remarks, 1902, 74. 

 Pepper, cultivation and demand, 1905, 539. 



planting in cotton by Kekchi Indians, 1904, 486. 

 production, remarks, 1901, 365. 

 red, capsicum, experiments in cultivation, 1903, 344. 

 Perfume plants as promising tropical crop, 1901, 361. 

 Periodicals, agricultural, in Department library, 1902, list, 1902, 740-745. 

 Permanganate of potash, use as remedy in stock poisoning, note, 1901, 28. 

 Persea gratissima, common names, commercial importance, etc., 1905, 508-510. 

 Persimmon, Delmas, origin, description, etc., 1904, 404-405. 

 Peruvian cotton, description and uses, 1903, 390. 

 Pests, cotton, boUworm and minor, control, remarks, 1904, 80. 

 crop. See Cotton, Weevil, etc. 

 insect, falling oft in 1904, 1904, 600. 



miscellaneous work, remarks, 1904, 83. 

 Peters, Dr. Austin, discovery of foot-and-mouth disease outbreak in 1902, 1902, 643. 

 remarks on tuberculin test for tuberculosis, 1901, 589. 

 J. GiRViN, article on "Waste in logging southern yellow pine," 1905, 483-494. 

 Randolph, originator of Randolph apple, 1902, 472. 

 Petrolene, constituent of asphalt, properties, 1902, 443. 

 Petroleum, Beaumont, dip for killing Texas fever ticks, 1903, 506. 



use for dipping cattle for scab, note, 1903, 505. 

 crude, and asphaltum for roads, study, 1903, 58. 

 use against San Jose scale, 1905, 338. 

 in road improvement, 1902, 439. 

 oils, crude, variety in composition, 1902, 443-445. 

 use in adulteration of turpentine, 1902, 332. 

 Pettenkofer, Professor, opinion as to purification of water by algse, note, 1902, 179. 

 Pharmacists, care against adulteration of drugs, 1903, 255-256. 

 Pharmacopoeia, United States, recognition by United States statutes, 1903, 257. 



stringent requirements, character, etc., 1903, 256. 

 Pheasants, protection, effect on market, 1904, 89. 



raising and prices, 1904, 516, 517. 

 Philippine Commission, United States, work for agriculture, discussion, 1901, 524-525. 

 Islands and Hawaii, forestry, remarks, 1902, 725. 



climate, soil, conditions, government, etc., 1901, 519, 686. 

 Manila fiber, improvement and law, 1903, 36. 

 hemp production, 1901, 360. 

 Philippines, agricultural investigations, discussion, 1901, 519, 520. 



remarks of Secretary, 1901, 76. 

 bureau of agriculture establishment, 1901, 525. 

 cultivation of manila, regions, 1903, 394. 

 earfy restrictions upon agriculture and trade, 1901, 521, 522. 

 encouragement of agriculture by Spanish Government, 1901, 521, 522, 523. 

 experiment stations, 1901, 523. 

 favorable field for production of cacao, 1901, 356. 

 forestry, 1901, 667. 



Luzon, as field for growing camphor, note, 1901, 356. 

 trade of United States, 1901, 106. 



work of United States Commission, discussion, 1901, 524. 

 PMlohela minor, woodcock, as a vanishing game bird, 1901, 447. 

 Philopena pear, origin, qualities and description, 1902, 474^75. 

 Phl<Boj>hthoriis liminaris, cherry bark beetle, remarks, 1903, 320. 

 Phormium tenax, New Zealand hemp plant, 1903, 396. 

 Phosphate, sodium, in irrigation waters, effect, 1902, 289. 

 Phosphates. See Plant food. 



Phosphoric acid balance in Department of Agriculture preservatives experiments, 

 1903, 301. 

 function in plant growth, 1901, 166. 

 use in tobacco fertilizers, note, 1905, 223. 

 Phycocyanin, relation to blue-green appearance of algae, 1902, 179. 

 Phylloxera, destruction of grapevines and necessity of grafting vines, 1904, 366. 



dipping grape cuttings, note, 1902, 26. 

 Physical characteristics of soil, effect on crops, 1902, 69. 

 laboratory. Mount Weather, remarks, 1904, 17, 



