ESTDEX OP SUBJECTS. 



987 



Page. 



Roaring, treatment 188, 576 



Hock for road building, tests, U.S.D.A 587 



phosphate. (,See Phosphate.) 



Rocks, cementing material, plant-food value. . 513 



crystalline, soils from 415 



grinding 500 



ground, fertilizing value 5oO 



Rodents, destruction 754 



U.S.D.A 52 



relation to bubonic plague 754 



Roentgen rays, effect on— 



fermentation .• 231 



Lepidoptera 056 



micro-organisms and fermen ts 225 



Root cellar, concrete, description 893 



gall, cause and treatment 749 



nodules of podocarpineous plan ts 828 



tubercles, formation 25 



tumors, notes 544 



Roots, determination of dry matter in 9 



factors affect ing branching 223 



Roseleaf blotch, treatment, Can 740 



Oidium, treatment S55 



Roselle, culture and use 40 



mildew, notes 40 



Rosemary flowers, betains in 204 



Roses, handbook 242 



treatise and bibliography 146 



Rosm, grading at the still, U.S.D.A 716 



Rotation- 

 experiments o42, 831, 833 



Can :i34 



Mich 136 



Miss 430 



Va 436 



of crops in the East, Pa 639 



relation to plant food, Minn S21 



systems, relation to insect injuries, 



U.S.D.A 554 



Rotations for the corn belt, U.S.D.A £31 



notes, Can 734 



Roughage, utilization, U.S.D.A 899 



Roup, pathology 576 



Roy ena pollens (7), analyses and digestibility. 871 

 Rubber- 

 bark beetles affecting 458 



CastUla, culture and preparation 347 



fertilizer experiments 645 



tapping experiments P.R 844 



congress, international, proceedings 244 



culture and preparation, handbook 647 



experiments 244, 438 



in Federated Malay States 647 



districts, maintenance of health in 244 



extraction of serum from 648 



guayule, shrub 244 



Hevea. {See Rubber, Para.) 



industry in Bolivia, monograph 148 



various countries 244 



insects affecting 53 



kickxiaand manihot, use 245 



latex, centrifugalization 244 



manuring 244 



methods of analysis 205 



Para, anatomy 44 



carbohydrate constituents r ] ,3 



Page. 



Rubber — Continued. 



Para, cost of production 442 



culture 244 



andu.se 43 



diseases 244 



reagent, discovery 244 



tapping experiments 244, 347, 442 



treatise 542 



plantation, preparation 244 



use 245 



planters, literature and labor fur 244 



preservation 244 



raw, adaptation 245 



testing 244 



root disease, studies and bibliography. . . 854 



shares, factors affecting valuation 245 



stumps as disease carriers 451 



tapping experiments 44 



tests 245 



trade, statistics 245 



trees and reserves of the .\mazon 244 



of Costa Rica 147 



varieties 438 



in West Africa 244 



vines of Africa 244 



viscosity 244 



vulcanization 244 



wild, adulteration 244 



Rubiaceae, nitrogeu-fixing bacteria in leaves.. 225 



Rudbeckia hirta, variation in, N.J 741 



Rufus scale, notes, Fla 357 



Ruminants, anatomy of stomach 68 



resorption in stomach 571 



Run-off as affected by forests 348 



tables for estimating 385 



Rural communities, improvement 898 



continuation school for boys and girls.. 695 



credit banks in England and Wales. . . 592 



Uruguay 795 



depopulation, paper on 690 



economics, instruction in 797 



papers on 690 



life conveniences and enjoyments, 



book 690 



organization 486 



text-book 898 



population in United Stales 489 



problems, papers on 793 



schools. (See Schools, rural.) 



survey in Missouri 390 



Rustic moth, notes 552 



Rusts as affected by cold, Wis 45 



propagation 746 



relation to meteorology 149 



treatment 47 



(See also Com, Wheat, etc.) 

 Rutarbagas. (See Swedes.) 



Rye, analyses 341 



bran, analyses 570 



N.J 774 



Wis 170 



bread, notes 765 



by-products, analyses 670 



cooperative experiments, S . C 430 



correlation ia 435 



culture, Ind 32 



