1920] 



INDEX OF SUBJECTS. 



939 



Chlfk-ppas, (Ipscriptinn and a^'ricultunil 



vain.', 528. 

 Chicks — 



causal factor in liatciiing, 169. 



feeding. Mo.. 174. 



fee<iing experiments, 573 ; N.(\, 467. 



growtli a.s affected by feed, Kj-., 72. 



growtii rate. 675. 



soy bean meal for, 674. 

 ("iiil. yield tables, 840. 

 Cliiidren — 



energj- requirements, 166. 



food requirement.'!. (See also Infants, 

 feeding. ) 



raalnouri.shed, nutrition clinics for, 167. 



pulmonary symptoms, relation to As- 

 caris, 80. 



(Spp nho Boys and Girls.) 

 Children's gardens. (See School gardening.) 

 Child-welfare teaching in rural communi- 

 ties, 694. 

 Chilies. (See Pepper.) 

 Chilo plejadellxui, notes, U.S.D.A., 25.3. 

 Chinch bugs- 

 barriers for, Ohio, 758. 



in Montana, 758. 

 (Chloridra) Ileliothin obsoleta. (See Cot- 

 ton boll- worm.) 

 Chloridea^ of Argentina, 731. 

 Chlorids in soil, determination, 311. 

 Chlorin — 



antiseptics. (See Dakin's solution.) 



conversion into hydrochloric acid, 712. 



loss from soil by drainage, 19. 

 Chlorophyll in plants, changes affecting, 



526. 

 Chloropicrin — 



effect of temperature on insecticidal 

 value, 157. 



for horse mange treatment, 184. 

 Chloropicrination, use of term, 184. 

 Chokecherry, wild, poisonous to live stock, 



Nev., 273. 

 Cholesterol, synthosi.s by infants, 769. 

 Chondriome«, notes, 524, 525. 

 Chortophila bra4tsic(e, control, 850. 

 Chromogen, new, in Calantbus, 327. 

 Chromosomes — 



arrangement of genes, 268. 



distance between genes. 268. 



number in relation to number of types, 

 632. 



number in dog, 269. 



sex, studies, 670. 

 Chrysanthemum — 



" crack-neck," 849. 



gall midge, control. Conn. State, 251. 



midge, studies, U.S.D.A., 360. 



fumigation, U.S.D.A., 362. 

 ChryitiH fihanc/haiensis, parasite of oriental 



peach moth, 359. 

 Chryanmeln Mffsbyana, life history, notes, 



850. 

 Chrysomphalurt — 



aonidum, notes, 555. 



diotvospermi, notes, 851. 



Chn/sophlyrtw endohiotica, notes, 245. 

 Cicada, 17-year, notes, Ind., 352. 

 Clcadellldae, North American, distrll)ution, 



450. 

 Cicuta oocidentalis, poisonous to live stock, 



Nev., 273. 

 Cider — 



making experiments, 807. 

 ropiness In, 807. 

 Cinchona culture, 344. 



Cinnamomum siebnldi, pollen develop- 

 ment, 328. 

 Cirphift spp., notes, 52. 

 Cistern water, treatment, 279. 

 Cisterns, concrete, construction, 188. 

 Citrina, u.se of term, 433. 

 Citrus — 



blast, studies, 156. 



canker, eradication work, 550. 



canker, liistory of, 349. 



canker organism, behavior in soil, 550. 



canker, relative susceptibility of spe- 

 cies, 848. 



diseases in Cuba, 448. 



diseases, spraying for, 550. 



Euphalcrus citri on, 451. 



groves, use of manure in, 239. 



insect posts, effects of freeze of 1917, 

 554. 



insect pests in Porto Rico, 555. 



leaf roller, notes, 556. 



mealy bug, control, 557, 659. 



melanose, notes, 550. 



plants, polyembryonic, venation and 

 senescence, 133. 



root-bark channeller, habits and con- 

 trol, 456, 



scab, notes, 550. 



scaly bark, control, 551. 



trees, effects of cold on, 550. 



trees, injury from windstorm In 

 southern California, 41. 



withei-tip, notes, 550. 

 t''7r//.vr r/randifi, polyembryonic shoots, 133. 

 Citrns fruits — 



bud selection, 542. 



culture experiments, 40; U.S.D.A., 

 339. 



culture in Bombay, 745. 



(Ulture in Fiji, 40. 



culture in Syria, 838, 



decay, causes, 41. 



dodder affecting, 652. 



fertilizer experiments, 342. 



fumigation experiments, 54. 



grading and packing in Australia, 

 836. 



improvement, U.S.D.A., 439, 440. 



insects affecting, 52. 



spraying experiments, 157. 



stocks for, 41. 



unfcrmented juice, manufacture, Calif., 

 717. 



variety experiments, U.S.D.A.. 339. 



(See also Oranges, Lemons, etc.) 



