SUBJECT INDEX 



187 



Crickets— Continued. 



in South America, (37) 157. 



injurious to Kickxia rubber, (30) 752. 



injurious to potatoes, (37) 157. 

 Criconema n.g. and n.spp., descriptions, (35) 460. 

 Cricula andrei, babits, (27) 456. 

 Criocephalus rusticus, injurious to timber, (29) 858. 

 Criocerinae, catalogue, (30) 458. 

 Crioceris — 



asparagi, see Asparagus beetle. 



duodecimpunctata, see Asparagus beetle,twelve- 

 spotted. 



melanopa, injurious to cereals, (28) 653. 

 Criptocephalus commutatas, notes, (28) 855. 

 Crisco, analyses, (27) 165. 

 Cristatithorax— 



latiscapus n.sp., description, (37) 59. 



pulchor n.g. and n.sp., description, (26) 254. 

 Crithidia — 



euryophthalmi n.sp., studies, (39) 559. 



fasoiculata in hibernating mosquitoes, (30) 757. 



gerridis, pathogenic to warm-blooded mammals, 

 (33) 862. 



hyalommae, studies, (30) 460. 



leptocoridis, morphology and life history, (34) 

 858. 



melophagj, relation to sheep's blood, (26) 760. 



Crocus- 

 bulbs as food, (32) 855. 

 sativus, analyses, (33) 466. 

 Croesus castaneas n.sp., description, (34) 456. 

 Cronartium— 



asclepiadeum, hosts of, (31) 540. 

 cerebrum— 



n.comb., studies, (31) 445. 



notes, (39) 859. 



on Norway pine, (38) 854. 

 coleosporioides, hosts, (39) 548. 

 comandrae and Peridermium pyriforme, iden- 

 tity, (34) 539. 

 comptoniae, notes, (30) 653; (37) 845; (38) 455. 

 occidentalen.sp., description, (39) 859. 

 pyriforme, investigations, (33) 448. 

 pyriforme, pycnia of, (37) 558. 

 quercus, notes, (31) 348, 445. 

 quercus on jack pines, (33) 351. 

 quercuum and Peridermium harknessii, asso- 

 ciation, (34) 849; (36) 454, 746. 

 quercuum, relation to Peridermium cerebrum, 



(26) 57. 

 ribicola — see also White pine blister rust. 



arthropod and gasteropod carriers, (39) 248. 



control in New York, (37) 846. 



diagnosis, (38) 356. 



dissemination by gipsy moth larvae, (38) 

 860. 



in New York, (36) 53. 



inoculations on Ribes, (38) 151. 



mycelium of, (37) 757. 



notes, (26) 651; (27) 253; (29) 547, 649; (30) 

 745, 849; (31) 451; (35) 551; (38) 254, 355. 



notes and treatment, (29) 249. 



overwintering, (31) 54; (37) 845, 846. 



parasite of, (34) 751. 



production of internal telia, (36) 845. 



spore distribution of, (31) 647. 



threatening Pacific States, (34) 354. 



treatment. (31) 50, 346; (32) 842. 

 spp.. Inoculation experiments, (38) 253. 

 spp., notes, (30) 148; (33) 351. 

 spp., pycnial stages, (38) 253. 

 spp., spore germination, (38) 225. 



Crop — 



adaptation in relation to climate, (40) 18. 



census in Nebraska, (40) 194. 



centers of United States, (39) 734. 



damages in 1909 and 1910, (26) 190. 



diseases, notes, (28) 645. 



distribution, relation to seasonal rainfaU, (39) 



511. 

 estimates, value and accuracy, (40) 592. 

 forecasts in India, (36) 689. 

 growth as aflected by fertilizers, (34) 517. 

 growth, relation to weather, (28) 115. 

 improvement in India, (40) 825. 

 mortgage system in Texas, (30) 591. 

 pest law of West Virginia, (28) 842. 

 plants, nitrogen relations, (40) 821. 

 plants, past and present climates, (40) 616. 



Crop — Continued, 

 production — 



at high altitudes, (39) 810. 

 cooperation in, (30) 792. 

 cost in Ohio, (40) 292. 

 effect on nitrification in,soils, (31) 119. 

 factors affecting, (26) 422; (35) 624. 

 for 1919, (40) 487. 

 in Algeria and Tunis, (40) 594. 

 Germany and America, (28) 294. 

 Ireland, (34) 291. 

 Saskatchewan, (38) 594. 

 Switzerland in 1916, (38) 91. 

 maintenance, (32) 14. 

 production, relation to — 



meteorology, (28) 198; (29) 314. 

 soils, (26) 434; (29) 416. 

 temperature and rainfaU, (26) 415; (28) 716; 

 (38)208. 

 production- 

 textbook, (32) 393. 

 transpiration in, (35) 823. 

 variations, effect on prices, (35) 496. 

 records, methods of keeping, (27) 142; (28) 536. 

 reports, (26) 94, 190, 490, 595, 689, 897; (27) 296, 

 392, 489, 692, 895, 896; (28) 90, 295, 489, 595, 690, 

 791, 896; (29) 190, 296, 896; (31) 95, 190, 391, 789; 

 (32) 90, 287, 490, 594, 689, 893; (33) 93, 192, 295, 

 395, 594, 788; (34) 91, 290, 392, 595, 690, 896; 

 (35) 91, 192, 393, 590, 684; (36) 92, 193, 392, 689, 

 894; (37) 92, 191, 392, 697, 891; (38) 91, 294, 393, 

 596, 695, 793; (39) 90, 192, 296, 497, 594, 796, 895; 

 (40) 93, 293, 391, 490, 594, 792, 894. 

 reports in Nebraska, (37) 291. 

 residues, analyses and use, (34) 519. 

 residues, fertilizing value, (32) 319. 

 rotation, see Rotation. 

 safety on mountain slopes, (29) 414. 

 statistics, (30) 594. 

 statistics — 



in Denmark, (31) 390. 

 Missouri, (36) 689. 

 Philippines, (26) 318. 

 on reclamation projects, (37) 92. 

 surveys, importance of, (31) 225. 

 surveys, relation to soil surveys, (26) 434. 

 systems, relation to temperature and rainfall, 



(26) 415. 

 yields — 



analysis, (38) 338. 



and prices, (31) 295; (32) 191. 



as aflected by late spring, (37) 316. 



as aflected by subsoiling, (30) 121. 



as guide to fertilizer use, (35) 215. 



forecasting. (36) 209. 



in Illinois, (37) 214. 



in Selby smoke zone, (35) 213. 



in United States, (31) 895. 



increased, causes of, (30) 133. 



increasing for war needs, (39) 21. 



increasing in Gulf Coast region, (40) 133. 



increasing in Kentucky and Tennessee, 



(40) 133. 

 per acre, change from year to year, (40) 490. 

 per acre in India, (40) 894. 

 yields, relation to — 



available plant food in soils, (29) 623. 

 bacterial activities in soils, (31) 121. 

 cropping system, (35) 29. 

 physical properties of soils, (33) 815. 

 rainfall, (34) 319. 

 weather, (34) 415. 

 yields, tests, experimental error, (39) 829. 

 zones of New Mexico, (29) 755. 



Cropping— 



continuous, efiect on soils, (28) 120. 

 eflect on soil moisture, (29) 211, 425. 

 system, continuous, (40) 589, 590. 

 svstcnis — ■ 



adaptation to soils in New Jersey, (40) 19. 



and climate, correlation, (34) 603. 



climatic control, (38) 414. 



eflect on soil moisture, (40) 429. 



eflect on soil nitrate, (40) 419. 



for Arkansas, (40) 133. 



for Middle Atlantic coastal plain, (38) 816. 



for Washington, Oregon, and Idaho, (38) 

 824. 



relation to meteorology, (28) 198. 



