1920] 



INDEX OF SUBJECTS. 



985 



Rice — 



beans as green mulch for bananas, 532. 

 blast, notes, 444. 



bran, analyses, Ind., 807 ; Ky., 373. 

 bug, summary of information, 550. 

 corn rootworm aflfecting, U.S.D.A., 253. 

 cultivation, meclianicai, experiments, 



484. 

 culture in British Guiana, 532. 

 fertilizer experiments, 425 ; Tex., 229. 

 insects affecting, 52, 252; U.S.D.A., 



252. 

 irrigation, rOle of tides in, 689. 

 leafhoppers, parasites of, 857. 

 meal, feeding value, 172. 

 meal v. oats as cattle feed, 172. 

 milleil, proposed standards, D.S.D.A., 



830. 

 prairie, culture, U.S.D.A., 139. 

 production in Brazil, 292. 

 seeding experiments, Tex., 229. 

 stalk borer, notes, U.S.D.A., 253. 

 stem borer, notes, 52. 

 straw as mulch for sugar cane, 532. 

 ufra disease, 444, 652. 

 Ustilaginoidea sp. affecting, 45. 

 variety tests, Tex.. 229. 

 water weevil, investigation, U.S.D.A., 



252. 

 weevil as affected by air-tight storage, 



254. 

 weevil, notes, 563. 

 weevil, paper on, 51. 

 weevil, vitality and rate of Increase, 



254. 

 wild, culture and germination studies. 



Can., 335. 

 RIcinus. (See Castor beans.) 

 Rickets — 



as a deficiency disease, 166. 

 beading of ribs in, 369. 

 diagonls, value of craniotabes In, 369. 

 studies, 264, 664. 

 ninderppst, inheritance of immunity, 583. 

 River measurement. (See Stream llow 



measurement.) 

 Road — ■ 



conditions, determining from rainfall 



data, U.S.D.A., 117. 

 development in California, 889. 

 law in Ijouisiana, 85. 

 maps for public u.sc, D.S.D.A., 387. 

 materials, bituminous, consistency of, 



U.S.D.A., 387. 

 matf^rials, bituminous, treatise, 186. 

 materials, tests, 482, 889 ; U.S.D.A., 



387. 

 oils, asphalt content, U.S.D.A., 698. 

 surfaces, design, U.S.D..\., 387. 

 traction, mechanincal, types of ve- 

 hicles, 484. 

 work, winter, U.S.D.A., 689. 

 Roads — 



administration, U.S.D.A., 387. 

 administration in Argentina, 388. 

 administration in Connecticut. 481. 

 administration In Kansas, 889. 



Road.s — Continued. 



administration in Louisiana, 85. 

 administration In Michigan, 481. 

 administration in Minnesota, 591. 

 administration in New York, 890. 

 administration in Vermont, 591. 

 adminintratlon in Virginia, 890. 

 classification by Bureau of Public 



Roads, 284. 

 construction — 



and maintenance, 481 ; U.S.D.A., 



186. 

 and maintenance, motor vehicles' 



share, U.S.D.A., 186. 

 contract bonds for, D.S.D.A., 387. 

 cooperation of railroads, U.S.D.A., 



186. 

 field manual, 284. 

 handling Federal equipment, U.S. 



D.A., 591. 

 in the Ozarks, 481. 

 surplus war materials for, U.S. 



D.A., 591. 

 treatise, 481. 



value of top soil as base, 185. 

 vertical curves, short method of 

 computing, 284. 

 country, foundation types for, 85. 

 cross sections, method of computing, 



U.S.D.A., 388. 

 drainage structures, design, U.S.D.A., 



387. 

 Federal aid types, U.S.D.A., 790. 

 grass, injury from mole crickets, 53. 

 improved, economic value, 284. 

 In the National Forests, U.S.D.A., 442, 



790. 

 Iowa, tonnage of traffic, 284. 

 macadam and gravel, bituminous 



treated, U.S.D.A., 689. 

 papers on, U.S.D.A., 186, 387, 591, 



689, 790. 

 public, in Quebec, historical develop- 

 ment, 85. 

 relation to motor truck operating cost, 



85. 

 suhgrade investigations, U.S.D..\., 591. 

 Robins, winter and summer, Ohio, 351. 

 Rock — 



at Iron Canyon dam site, bearing ca- 

 pacity, 889. 

 blasting, dynamite for, 480. 

 for road building. (Sec Road materials.) 

 phosphate. (See Phosphate.) 

 Rodents in Australia, Internal parasites of, 

 457. 



(See also Mice and Rats.) 

 /'oeatcUa cancellata, immunity of pear va- 

 riety to, 753. 

 Root — 



cellars, concrete, construction, 90. 



cork in plants, ecological significance, 



732. 

 knot, control, 551. 

 nodules. (.SVe Nodule bacteria.) 

 rot control, U.S.D.A., 153. 

 tips, absorption of minerals by, 730, 



