INDEX. ( 



Page. 



Squares, multiplication in cluster cottons 28 



small, breeding places for weevils 11 



superfluous, early rejection 20 



weevil-infested, shedding 43, 74 



Staminal tube, proliferation 49 



Stipules of outer bracts represented by bractlets 33 



Stormproof varieties of cotton 27 



Superfluous buds, discussion 21 



Symbiotic specializations between plants and animals 29 



Tapinqmaramulorum, ant inhabiting Rabinal cotton 39 



Temperatures at localities where Kekchi cotton is grown 15 



Terrell, Tex. , experiments 52 



Texas, early advent of weevils 9 



southern, method of checking weevil 12 



Thespesia, species not attractive to boll weevil 69 



Top crop, effect of weevil 22 



Tree cottons, dimensions 23 



discussion 17 



immunity to weevils, reported 23 



in Guatemala *■. 12 



infestation by weevils 8 



Mexican, nectaries 30 



rejection of buds 21 



weevil adaptations 23 



(See also Perennial cottons.) 



Trelease, William, observations 33 



Tropical America, field for experiments ._. 9 



Tshubai, plant protected by the kelep 36 



Tucuru, Guatemala, Kidney cotton 24, 66 



Turkeys, boll weevil destroyers 24 



Tyler, F. J. , observations 28 



United States cotton varieties, effect of Guatemalan conditions 17 



Upland cottons, adaptations 74 



effect of change of climate 16 



indeterminate habit in United States varieties 13 



native in Central America 10 



origin 10, 44 



preference of keleps - 25 



secretion of nectar 32 



Variations, climatic, in cotton 17 



in Kekchi cotton 15 



Variegation in Kekchi cotton 16 



Varieties, new, formation by Indians 15 



Victoria, Tex. , experiments 60, 61 



Volunteer cotton, absence in eastern Guatemala 12 



breeding of weevils 12 



AVeather, dry, effect on crop 13 



exclusion of boll weevil from Mexican plateau 11 



Webber, H. J., statements '. 13, 42 



Weaving by Guatemalan natives, use of foreign thread 25 



Weevil. See Boll weevil. 



Weevil-proof lining of bolls 57 



Weissman, Professor, doctrine of inheritance 68 



Winters, severe, no protection from weevils 12 



o . 



