INDEX. 21 



Bulletin 



Peanut — Continued. No. Page. 



oil, nature and food use 469 13 



protein content and energy value 459 12 



Peas — 



Canadian field, protein content and energy value 



of green roughage 459 12 



field, protein content and energy value 459 12 



Pebbles, durability on roads, selection for 463 47-48 



Pennsylvania — 



grapes, composition of different varieties 452 4-6 



maple sugar — 



analyses, table 466 20-21 



production, 1849, 1909 473 13 



Peppermint — 



ester content, distribution, etc 454 3, 5-10, 14-15 



oil- 

 effect of frost action on plant, studies 454 12-15 



effect of growing plants in different soils, ex- 

 periments 454 2-3 



menthol content from fresh and dry herb, ex- 

 periments 454 5-11 



nature and source 454 1 



yield and quality, effect of cultural and climatic 



conditions, bulletin by Frank Rabak 454 1-16 



plant, effect of light and shade on oil yield 454 11-12 



plants, yield of oil from fresh and dry plants at vari- 

 ous stages of growth 454 3-11 



Peru — 



sugar factories, production per employee 473 31 



sugar industry, history and extent 473 30-31 



Pests, poultry, treatment, school lessons 464 16-17 



Phalaris arundinacea, description 461 18 



Pheasants, food use, value and nature of flesh 467 7 



Philadelphia butter quotations, establishment and publi- 

 cation 456' 25 



Philippine Islands — 



crops, five principal, acreage and value 473 19 



sugar — 



consumption, exports and imports 473 19-20 



industry, history and extent 473 18-20 



Pfoleum pratense, description 461 20 



Pierce, Roy G., and Carl Hartley, bulletin on " The 



damping-off of coniferous seedlings " 453 1-32 



Pigeons — 



food use, value and nature of flesh 467 . 5 



industry in United States, magnitude 467 2 



Pine — 



cones — 



collection from squirrel caches, advantages 475 5-6 



collection, treatment and management 475 6-17 



yield of seed of different species 475 17 



lands, Florida, types and utilization 462 10-11 



nuts, food use 460 20 



seed — 



cost and losses from damping-off of seedlings 453 2 



extraction, apparatus, description and opera- 

 tion i 475 13-17 



gathering, treatement and care 475 4-17 



method of growth and distribution, size, etc 460 3, 17, 20, 23 



number per pound 475 18 



use as food 460 3,17,20,23 



seedlings, nursery methods to prevent damping-off 453 3-14 



trees, Rock Mountain Region, bulletin by George B. 



Sudworth 460 1-47 



western species, key 460 46 



