INDEX, 



85 



Page. 



Nectaries, extrafloral, in Kekchi cotton 34 



fioral, no connection Avith weevil resistance 29 



homology 32 



inactive, of Rabinal cotton 24 



inner, bractlets subtendino; 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 to boll weevil 69 



Parker cotton, dimensions of buds and bracts 40 



experiments 41 , 57, 60 



flaring of squares 40 



l^roliferation 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 ai)hids 39 



Peruvian cotton in Texas 37 



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, difhculty 22 



Pollen, diet of weevils 55 



eaten by weevil larvte :\ 47 



necessity for sexual maturitj^ of weevils 55 



Pollen-eating habit, development 63 



Poneridic, 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 46 



from staminal tube 49 



wall of boll 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 



