14 



DEPARTMENT OF AGRICULTURE BULS. 851-875. 



Bulletin 



Oregon — No - rage, 



grape shipments, 1916-1919 861 3,49 



f 22-24, 



water-conduit systems, examination, and results S52{ 35, 41, 



I 77, 78, 79 



OHorhynchus ovatus, destruction by starling 868 17 



Packing, grapes, and containers used 861 9-12 



Palina Christi. See Castor-oil plant. 



" Parakratesis " act, Greece, note 856 2-3 



Parasites, Mediterranean flour moth 872 11 



Pasturing, steers, gains of yearlings as influenced by winter 



rations ; bulletin by E. W. Sheets and R. H. Tuckwiller S70 1-20 



Peaches — 



injury by starlings ., 868 30 



sizing machine, construction and operation, bulletin by 



Manley Stockton and J. F. Barghausen 864 1-6 



Peach-sizing machine — 



bulletin by Manley Stockton and J. P. Barghausen 864 1-6 



development and cost 864 1 



Pears — 



grading, use of sizing machine, note 864 1 



injury by starlings : 868 30 



Pennsylvania — 



farm organization and management, bulletin by Earl D. 



Strait and H. M. Dixon . 853 1-32 



Grove City, farm business of 422 farms in vicinity 853 4-32 



hay shrinkage at experiment station, data 873 4, 5 



northwestern, description of soils and conditions 853 4-5 



Philadelphia, market preferences in grapes 861 51 



Phylloxera, grape disease, prevention by use of resistant 



stocks 856 7, 12-15 



Pickering — 



lime-water sprays. See Pickering sprays, 

 sprays — 



bulletin by P. C. Cook 866 1^-47 



comparison with Bordeaux mixture, results 866 8-45 



preparation on commercial scale, suggestions 866 42-44 



Piezometers, use in draintile for measuring water flow 854 8 



Pigeons, relation to starlings S68 49-50 



Pintail- 

 breeding range 862 31 



description and food habits 862 I aoIq'- 



Pipe, concrete — 



carrying capacity, opinions of engineers 852 9—16 



monolithic construction description 852 3, 4 



Pipes — 



grade-line, water flow 852 66-S1 



irrigation, types » 852 3-4 



pressure, water flow in S52 5-65 



Plantains, food of shoal-water ducks S62 6,34,45 



Plantation, cotton, organization for boll-weevil poisoning 875 17—18 



Plants, food, of shoal-water ducks, classified list 862 49-56 



Poison, use in control of boll weevil, bulletin by B. R. Coad and 



T. P. Cassidy 875 1-31 



Poisoning — 



boll weevil — 



organization of plantation operations 875 17—18 



principles governing 875 1-2 



boll weevils, cost, and gains 875 26-28 



calcium arsenate, dangers and precautions against 875 5-6 



castor-bean, note 867 2 



Polyporus (imiirus, cause of dry-rot of incense cedar, descrip- 

 tion, etc 871 2, .8-49 



f 4.11.16, 



Pondweeds, food of shoal-water ducks 862 24, 29, 32, 



{ 40, 49 



