INDEX. 81 



. Page. 



Brown cotton, origin '. 70 



preference of Indians 70 



Brues, C. T., observations 52 



Bnds, breeding in, a derived habit 62 



falling in Kekchi cotton 20 



floral, dimensions 40 



method of rejection 21 



ovaries of, attacked by weevils 48 



parasitized, behavior 43 



periods of immunity , 74, 75 



persistence of injured 47 



l^rolife ration 46 



causes and conditions 49 



in relation to that of bolls 64 



protection by involucre 39, 41 



recovery from weevil punctures 41 



superfluous 21 



detrimental 22 



weevil-infested, shedtling 74 



Cacao branches compared with cotton 19 



Cajabon, Guatemala, cotton grown in vicinity 15 



planting of brown cotton 70 



Cecropia, symbiotic specialization 29 



Chickens, boll weevil destroyers 24 



Climate, effect of change on Upland varieties 16 



on earliness , 17 



germination of seed 15 



Climatic conditions, effect on United States varieties 17 



effects on adaptations 1 0, 43, 44 



variations in cotton 17 



Cluster cotton, discussion 28 



origin 70 



pendent bolls 28 



rejection of buds 21 



variety of King cotton 17 



Coffee branches compared with cotton 19 



Cold, effect on tropical varieties 18 



weevils 12, 13 



Collins, G. N. , observation 54 



Conscious selection 70 



Corn, effect of changed conditions 18 



Cotton aphis, infesting cotton ; 39 



I^roduction, probable extension 44 



short-season varieties 12, 14, 22 



stimulus of new conditions 17 



Cross-fertilization aided by boll weevils 55 



effect of simultaneous blossoming 23 



secured through nectar 29 



Cuba, native cottons 23 



Culture of cotton, methods, in eastern Guatemala 19 



on Pacific slope of Guatemala 70 



Mexico 45 



Determinate growth of Kekchi cotton 11 



habit, disadvantages of early planting avoided 14 



jirimary branches a fact< )r ' 20 



Dimorphic branches 19 



Dry climate, region, etc. iSt'g Arid. 



Dwarf cotton, effect on cultural methods 19 



habit of Kekchi cotton 11 



Earliness, effect of development of primary l)ranches 20 



climatic conditions 12, 17 



not shown by date of flowering 13 



Early bearing, facilitated by long basal branches 19 



planting, disadvantages 14 



9962— No. 88—05 m 6 



