TABLE OF CONTENTS. 
Page. 
Letter of submittal 3 
Introduction 5 
Letter of transmittal 7 
The boll worm of cotton 9 
Destructiveuess 9 
Food plants other than cotton 12 
Characters and transformation 14 
The egg 14 
The larva 14 
The pupa 20 
The imago 22 
Number of broods and hibernation 25 
Natural enemies 27 
Vertebrates: Butcher Bird ; Crows; Quails. 
Invertebrates: Podisus spinosus : Lepioierna ; Erax lateralis; Ants 
Trichogramma pretiosa; Hexaplasta zigzag; Tachiua; Euplectrus 
comstockii. 
Insect ravages easily mistaken for those of the boll worm 28 
Euphoria melancholica 29 
Platynota sentana , 29 
Caccccia rosacean a 30 
Prodenia linen tella 30 
Noctuid (undetermined) 30 
Plant lice (Aphis gossypii and Aphis sp. ) 30 
ThripidsB 30 
Remedies 31 
Topping of cotton and rotation of crops 31 
Fall plowing 31 
Corn as protection to cotton 32 
Lights for attracting the moths 33 
Poisoned sweets 38 
Pyrethrum 39 
Experiments with dry powder 39 
Decoctions of Pyrethrum 42 
Other vegetable insecticides 44 
Meteorological considerations 45 
Insect, diseases 48 
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