INDEX. 15 



Phylloxera — Continued. Bulletin 



grape— continued. No - Pa 8 e - 



control bv water and heat, experiments 903 98-100 



diffusion means 903 100-122, 123 



in California, bulletin by "W. M. Davidson and R. L. 



Nougaret 903 1-128 



in California, discovery 903 4 



indications in vineyards 903 15, 18-22 



infestation progress in California, map indicating 903 12 



f 31-98 I'M 



life history, hibernation, forms, and habits 903< ' ' -, n^ 



nomenclature and synonvmy 903 26-27 



rearing experiments, California, methods 903 52-53 



spread, accidental and natural, in California 903 7-11 



vineyards destruction, details 903< ' ' -, 'L. 



wandering radicicole larvae, factor of spread 903< -, §oJ\{*. |.t| 



winged, development, description, and habits 903 73-82 



winged, factor in spread, discussion 903 8-9, 100-102 



vitifolix. See Phvlloxera, grape. 



Pickling, fish, in sardine industry 908 8, 34-50, 122 



Pilchard, French sardine, identification and advantages 908 2-3, 118-119 



Pink bollworm, cotton, report on investigations in Mexico 918 1-64 



See also Bollworm, pink. 

 Pipe — 



concrete- 

 carrying capacities in miner's inches, table, etc 906 24-25, 37 



description, cost, laying, and causes of failure 906 4-23 



reinforced, description and cost 906 6-S 



use in irrigation, bulletin bv F. W. Stanlev and Samuel 



Fortier. ". 906 1-54 



irrigation systems, design 906 23-54 



Pipes — 



concrete, failure, causes 906 15-23 



irrigation, tvpes and materials, description 906 2-4 



laving in irrigation work, trenching, back filling, and jointing. 906 13-15 



metal, description, and use in irrigation 906 2-3, 4 



steel, description, surfacing, or inclosing with concrete 906 2-3, 4 



vitrified, clay, use in irrigation 906 3-4 



wood, use in irrigation, incasing with concrete 906 3, 4 



Planing mill, products from black walnut, demands and uses 909 60, 67-68, 89 



Planting, practices in Colorado, depth, dates, and rates 917 19-21 



Plants — 



dormant, resistant to fumigation injury 907 33 



malvaceous, infestation with pink bollworm 918 32-34 



resistance to gas injury, physiological conditions causing. . . . 907 30-33 



Plowing, practices, Colorado, sugar-beet districts 917 13-15 



Poison, barium carbonate, toxicity to rats, bulletin bv Erich W. 



Schwartze .' 915 1-11 



Poisoning- 

 pink bollworm, experiments 918 51-52 



rats, with barium carbonate, experiments 915 2-11 



Polychrosis viteana. See Moth, grape-berry. 



Pop corn, hybrid, brachytic characters 925 2-7, 10 



Posson, P. J., J. B. Bain, and Ralph P. Hotis, bulletin on " Unit 



requirements for producing market milk in Vermont " 923 1-18 



Posts, walnut, utilization of small and defective logs 909 59, 81 



Potatoes — 

 freezing — 



injury when undercooled, bulletin by R. C. Wright and 



George F. Taylor 916 1-15 



points of seven varieties, studies 916 4-7 



frost — 



injuries, classes 916 1 



necrosis, physiology, studies, review of literature on 916 2-4 



