SUBJECT INDEX 



209 



Dry — Continued. 



matter in mixed rations, digestibility, (32) 70. 



rot, notes, (26) 551. 



rot, studies, (26) 544. 



seasons in San Diego, (27) 316. 

 Drying— «ee also Foods, Fruit, and Vegetables, 

 drying. 



plant, community, (38) 716. 



theory of, (36) 809. 

 Dryinidae — 



life histories, (34) 557. 



notes, (28) 63. 

 Dryocoetes pseudotsugae n. sp., description, (35) 



856. 

 Dryophanta erinacei, studies, (31) 354. 

 Dschamma, notes, (29) 362. 

 Duabanga sonneratioides, distribution and use, 



(38) 751. 

 Duboisiaspp., studies, (39) 433. 

 Duck- 

 disease, new, (33) 483; (37) 483. 



house, description, (34) 177. 



hybrids, spermatogenesis in, (27) 371. 



industry in Pateros, Philippine Islands, (30) 374. 



manure, analyses, (3S) 23. 



ruddy, sex characters, (39) 878. 



ruddy, tracheal air sac, (40) 351. 



sickness in Utah, (39) 400. 

 Ducklings— 



as affected by rice diet, (38) 677. 



cost of raising, (36) 73. 



cramp disease in, (32) 278. 



disease of, (36) 85. 

 Ducks — 



breeding and management, (33) 77. 



care and management, (34) 377, 569; (39) 176; 

 (40) 177. 



crest of, (30) 773. 



crossbreeding experiments, (32) 571. 



destruction of mosquito larvae bj', (34) 856. 



destruction of tobacco insects by, (26) 638. 



dying around Great Salt Lake, (33) 251. 



egg laying capacity of various breeds, (29) 672. 



eggs, toxicity, (33) 163. 



feeding experiments, (27) 774; (32) 868; (35) 377. 



gonadectomy and secondary sex characters, 

 (38) 170. 



growth of. (30) 467. 



host of Trypanosoma gambiense, (27) 787. 



hybrid sterility in, (29) 167; (30) 374. 



hybrid, studies, (26) 473. 



hybridization, (32) 869. 



incubator hatched, profits from, (33) 763. 



Indian Runner — 



breeding and care, (29) 574. 

 British standard for, (30) 675. 

 laying capacity, (30) 773. 

 manual, (30) 873. 



inheritance of size in, (26) 876. 



mallard, food habits, (40) 254. 



metabolism experiments, (29) 171; (30) 261. 



origin and history of breeds, (27) 572. 



ovarian transplantation in, (40) 367. 



retention of amino acids by, (33) 172. 



runner, as farm layers, (40) 876. 



serum proteins of, (32) 861. 



treatise, (26) 270. 



variations in due to feeding stuffs, (32) 367. 



wild, "fishy" flavor, (40) 255. 



wild, foods for, (29) 373; (30) 545; (33) 251. 



wild, mallard, domestication, (33) 381. 



wDd, seasonal changes in testes and plumage, 

 (32) 264. 

 Duckweeds, culture for wild ducks, (33) 251. 

 Ductless glands, chemical pathology, (32) 78. 

 Dugaldia hoopesii — 



description, (39) 386. 



toxicity toward sheep, (30) 680. 

 Duguetia, notes, (31) 339. 

 Dulcite as source of carbon for molds, (30) 226. 

 Dulcite, determination, (20) 709. 

 Dum palm fruit, analysis and use, (27) 463. 

 Dumraon Agricultural Experimental Station, re- 

 port, (29) 228. 

 Dun sickness — 



in horses, (33) 384. 



notes, (26) 480. 



Duodenal — 



contents, lipolytic properties, (31) 761. 



regurgitation, effects of, (34) 862. 

 Duodenum, activity of ferments in, (29) 268. 

 Duomitus punctifer, notes (32) 554. 

 Duralumin for household utensils, (32) 457. 

 Durian — 



analyses and use, (30) 363. 



asexual propagation, (32) 142. 

 Durio zibethinus, ase.xual propagation, (32) 142. 

 Durra^ 



covered kernel smut, (39) 756. 



culture — 



experiments, (28) 532; (32) 526; (40) 433. 



in Jamaica, (32) 229. 



in Texas Panhandle, (29) 430. 



drought resistance of, (28) 633. 



notes, (31) 333. 



root parasites of, (31) 842. 



Sudan, for dairy cows, (29) 374. 



varieties, (37) 338. 



yields, (29) 32. 

 Dust- 

 bacteria in, (38) 885. 



determination of air, (35) 210. 



effect on plants, (31) 34. 



effect on transpiration from leaves, (30) 726. 



explosions in grain milling, (36) 686; (39) 494. 



explosions in grain separators, (35) 688. 



from blast furnace gas, analyses, (34) 623. 



furnace, effect on vegetation, (30) 131. 



injury to agriculture and forestry in Austria, 

 (37) 528. 



layers in the atmosphere, (27) 316. 



prevention — 



experiments, (29) 590; (31) 686; (32) 884; 



(33) 686; (36) 188; (38) 790. 

 notes, (34) 484, 890. 

 on roads, (38) 87. 

 progress in, (28) 383. 



preventives, bibliography, (36) 188. 



"red rain," notes, (27) 414. 



sprays for insects, (31) 449. 

 Dustfall— 



in English towns and cities, (30) 619; (34) 15. 



of March, 1918, (40) 616. 

 Dusting— «ee aho Spraying and specific plants. 



calendar, (39) 149. 



experiments, (39) 349, 548, 552, 855; (40) 154, 341. 



machinery, tests. (39) 868. 



notes, (39) 548. 



V. spraying, (32) 550; (39) 755; (40) 246, 251, 330, 

 445, 648. 



V. spraying for apple scab, (31) 449. 

 Dusts, carbonaceous, inflammability, (37) 109, 410. 

 Dusty surface beetle, notes, (31) 757. 

 Duty of water, see Water, duty of. 

 Dye- 

 extracts, production from wood, (28) 50. 



plants of Chile, (38) 336. 



plants of Iowa. (29) 626. 

 Dyes- 

 acid, anticoagulant action on protein, (35) 880. 



action on bacteria, (39) 412. 



azo, purification, (40) 808. 



coal tar. separation, (36) 714. 



fat-soluble — 



behavior in the organism, (26) 671; (27) 670. 



effect on health, (36) 262. 



effect on tuberculous guinea pigs, (29) 177. 



methods of analysis, (36) 714. 



of Dutch East Indies, (30) 697. 



organic, methods of analysis, (27) 609. 



photosensitizing, (40) 16. 710, 711. 



subsidiary, determination in food colors, (29) 11. 



use against tuberculosis, (31) 583. 



use in food coloring agents, (29) 661. 

 Dyestufls— 



analysis and identification, (39) 506. 



from Latin America, (38) 248. 



identification, (29) 12. 



natural, (40) 16. 



vegetable, in Madras, (36) 319. 



vegetable, of New Zealand, (38) 309. 

 Dynamite — 



agricultural, tests. (31) 589. 



as soil improver, (29) 748; (32) 730 



effect on soil, (34) 125. 



