191G] 



INDEX OF SUBJECTS. 



975 



Potato — Continued. I'ajje. 



dry spot, description 547 



exliibits, Ohio 899 



fleld rot, studies, U.S.D.A 455 



fleabeetle, studies 253 



late blight. Investigations, Iowa 349 



late blight, notes 150, 246 



late blight, treatment, N.Y. 



State 832 



leaf roll, studies 247 



leak, investigations, U.S.D.A 751 



leaves, invertase of 334 



plants, fllositj' in 49 



powdery dry rot, treatment, 



U.S.D.A 847 



pulp, acidity 770 



silver scurf, studies, U.S.D.A 455 



stalk-borer, notes C>',7 



tuber rot and wilt, studies 240 



tuber rot, notes 653 



tuber worm, remedies 35S 



tubers, production above ground 523 



tyrosinase, notes 414 



wart disease, notes 150, 640 



Potatoes — 



as affected by Fusarium, U.S. 



D.A 240 



as affected by manganese 634 



conservation for stock food 505 



culture experiments, Ariz 527 



culture experiments, N.Dak 220 



culture experiments, Oreg 341 



culture in sand hills of Ne- 

 braska, Neb 827 



disease-free, production, U.S.D.A. 751 



dried, notes 505 



fertilizer experiments 126, 



218, 323, 425, 427, 430, 519, 629 



fertilizer experiments, Ind 724 



fertilizer experiments. Me 34 



for fattening swine 376 



for milk production 174 



hail injury to 734 



Irrigation experiments 636 



radio-active fertilizers for 628 



seed, selection. Wash 396, 6D0 



sensitivity to poison 457 



spraying experiments, Oa 831 



spraying experiments, Hawaii — 527 



spraying experiments, N.Y.State 831 

 sprouting In relation to soil 



moisture, Hawaii 527 



starch content, Okla. 108 



tuberous growth at expense of 



roots 330 



varieties 637, 742 



varieties, N.Dak 229 



varieties, R.I 229 



weather factor for, U.S.D.A 114 



winter storage 495 



yield in relation to weather, 



U.S.D.A CIS 



Potomac River, pollution of 286 



Poudrette, fertilizing value 135, 323 



Poultry — 



care and management. N.Dak. _ 172 



Poultry — Continued. I'uKe. 



care and management, N.J 275 



clubs in the South, U.S.D.A 195 



diseases and parasites In Guam, 



Guam 878 



diseases, handbook 284,379 



experliueuts, Minn 377 



feeding experiments 273,377 



house equipment. Wash COO 



houses, construefiun 792 



bouses, construction, Mo 7'J2 



houses, construction. Wash (iUO 



houses for pralrli- farms ooo 



Industry, Importance of 275 



keeping, text-book 93 



products, marketing 892 



raising, Flemish system 275 



school lessons on 592,504 



(Sec uIho Chickens, Ducks, etc.) 



Powdery mildews, physiological rela- 

 tion to hosts. Mo 814 



Power plant apparatus, testing 889 



Prairie dogs — 



destruction, Kans 52 



prevalence in Colorado 51 



systematic account, U.S.D.A 551 



Precipitation — 



at State College, Pa 507 



cyclonic, distribution, I'.S.I).A_ 419 

 in southeastern Rocky Mountain 



Slopes, U.S.D.A 619 



relation to stream flow, U.S.D.A. 110 

 (See also Rainfall, Snowfall, 

 etc.) 



Precooling plant, description 391 



Pregnancy — 



diagnosis 73, 170, 879 



nitrogen metabolism during 473 



Preserves, preparation 419 



Pressure — 



change charts, U.S.D.A 419 



vertical, distribution In earth 581 



Prickly pear. (Sec Cactus.) 



Primula kewcnsis and Its allies, ge- 

 netic behavior 81M 



Prionoxystua rohinia-, notes 356 



Prionus californicus (t), notes 656 



Prisoners of war, feeding In Ger- 

 many 368 



Privies, sanitary, description 189, 887 



Proso, culture In Texas Panhandle, 



U.S.D.A 440 



Proaopodea fugar, notes 659 



ProspaltcUa — 



berleaei, notes 760 



pcrnicioai, notes. Conn. State 54 



Protapantelea n.sp., notes 465 



Protease In guinea pig and rabbit 



serums 382 



Proteid. (See Protein.) 



Protein — 



absorption In typhoid fever 369 



cleavage In flour 205 



cleavage products. (See Amino 



acids.) 



determination in meat 315 



