12 



DEPARTMENT OF AGRICULTURE BULS. 226-250. 



Pavements — ■ Bulletin 

 concrete — No- 

 durability, advantages and growth of demand 249 



types, construction and requirements 249 



country roads, Portland cement concrete, bulletin by 



Charles H. Moorefield and James T. Voshell 249 



vitrified brick for country roads, bulletin by Vernon M. 



Peirce and Charles H. Moorefield 246 



Peach juice, preparation and sterilization, experiments 241 



Peaches, dried, processing formula 235 



Pear, dried, processing, formula 235 



Pecan, range and lumber output 232 



Peirce, Vernon M., and Charles H. Moorefield, bulle- 

 tin on " Vitrified brick pavements for country roads " 246 



Pennsylvania, lumber industry, sawmills, output, kinds of \ 2 Q9 

 wood, etc J 



Pennyroyal, use as flea repellant 248 



Pepperidge, range 232 



Penderium pyriforme — ■ 



control measures, suggestions 247 



distribution 247 



effect on host plants 247 



history, morphology, and comparisons with other spe- 

 cies, etc 247 



Persimmon, range and lumber output 232 



Picea spp. See Spruce. 



Pignut hickory, note 232 



Pine — 



beetle, southern, injury to shortleaf pine, control 244 



forests, management for turpentining industry, French 



method 229 



lodgepole, utilization and management in the Rocky 



Mountains, bulletin by D . T. Mason 234 



See also Lodgepole pine, 

 longleaf — 



gum yield, rate of exudation 229 



resin, formation and flow 229 



supply for turpentine operations, distribution, and 



number years available 229 40-43 



lumber, output by varieties and by States 232 9-10, 12-13, 14 



range and lumber output, by States 232 9-13, 27 



sawyer, southern, injury to cut pine timber, control 244 36 



seed — 



destruction by mammals 244 



injury by cone beetle, relation to damage by squir- 

 rels 243 



losses from cone beetles 243 



shortleaf. See Shortleaf pine . 

 timber — 



destruction by fire, relation of turpentining «.- - 229 



effect of turpentining 229 



tree, resin production, formation and flow 229 



western — 



source of naval stores, experiments, discussion, etc. 229 



yellow, turpentining experiments and outlook 229 



Pineapple juice, preparation, sterilization, and concentra- 

 tion, experiments 24] 



Pines — 



disease caused by cronarlium pyriforme, bulletin by 



George G. Hedgcock and William II. Long 247 



distribution of eight species 244 



sugar and wcsiiin \cllow, injury by cone beetles, bulle- 

 tin by John M. Miller 243 



yield of gum, comparison of longleaf pine and western 



yellow pine 229 



Pine-tip moth, Nantucket, injury to shortleaf pine 244 



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