INDEX. 85 



Page. 



Sectaries, extrafloral, in Kekchi cotton 34 



floral, no connection with weevil resistance 29 



homology 32 



inactive, of Rabinal cotton 24 



inner, bractlets subtending 33 



connected with drooping habit 28 



of involucre, discussion 31 



of different varieties 31, 32 



Kekchi cotton 16 



leaves, general discussion 30 



species of Hibiscus 32 



Oil glands, of bolls 53 



protective feature 52, 54 



Okra cotton, origin 70 



Old World cottons. See Asiatic. 



Origin of cottons in arid regions 21 



improved varieties of cotton 70 



Upland varieties of cotton 10, 44 



Pachon cotton, adaptations 74 



characters 34, 43 



comparison in Texas and Maryland - . 18 



hairiness 25 



involucral bracts 25 



Palmer, Dr. Edward, discovery of weevil 45 



observations on cotton 45 



Paris green, effects on boll weevils 14 



Paritium, species not attractive t§ boll weevil 69 



Parker cotton, dimensions of buds and bracts 40 



experiments 41, 57, 60 



flaring of squares 40 



proliferation 60 



Pendent bolls, discussion 27 



Peppers, importance to Indians 11 



Perennial cottons, annual cutting back 24 



not likely to be of use in the United States 67 



seasonal bearing 23 



Pergande, Theodore, identification of aphids 39 



Peruvian cotton in Texas J 7 



Petals, smoothness an obstacle to keleps 26 



Petioles, Kekchi cotton 16 



Pittier, H:, observations 26, 39, 46 



Planting, date in Guatemala 19 



late in northern localities 13 



Plant lice injurious to cotton 39 



Plants, destruction in the fall, difficulty 22 



Pollen, diet of weevils 55 



eaten by weevil larvae 47 



necessity for sexual maturity of weevils 55 



Pollen-eating habit, development 63 



Poneridse, nectar collected 30 



Proliferation, advantage only under conscious selection 71 



best weevil-resisting adaptation 9 



diminution of power in larger buds 51 



effect of dry weather 60 



efficiency 40 



from staminal tube 49 



wall of boll f. 58 



in buds and bolls, relation 64 



Kekchi cotton 46, 49, 75 



King cotton 60 



Parker cotton 60 



varieties other than Kekchi 50 



of bolls 55, 56, 59 



bud, causes and conditions 49 



corolla 48 



internal tissues of buds 46 



