104 HIBERNATION OF THE COTTON BOLL WEEVIL. 



Page. 



Cotton, sprout, as food for boll weevils emerging from hibernation 94,99 



stalks as hibernation shelter for boll weevil 35,38, 



39,42,49-50,74,75,95,99 

 stubble. {See Cotton, sprout.) 



"top crop" outof question in region infested by boll weevil 13,95 



uniform planting in control of boll weevil, importance 87-88,93-94 



volunteer, as food for boll weevils emerging from hibernation 94,99 



Ditches as affording hibernation shelter for boll weevil in the fields 30 



"Effective temperatures" 40,41 



Excelsior as hibernation shelter for boll weevil 35,38 



Farmyards as hibernation shelter for boll weevil 31 



Fence rows as hibernation shelter for boll weevil 20 



Ginneries as hibernation shelter for boll weevil 31-32 



Grass as hibernation shelter for boll weevil 30,35,36,39,42,74,75 



Hay as hibernation shelter for boll weevil 31,35,38,49-50,74 



Hibernation of boll weevil, acclimatization as affecting survival and emer- 

 gence . 42-43 



accumulated effective temperature as related to 



emergence 46-48 



activity and emergence as affected by rainfall. 41, 



53,59-61,69-71,91 



during normal hibernation period 13-14, 



26,28,62-64,66-67,97 



winter 64-65 



following emergence, nature 50-52 



of unfed weevils after emergence, in- 

 termittent 51-52 



climatic conditions as affecting entrance there- 

 in 58-62,95 



related to emergence--- 68-73 

 producing emergence, Dal- 

 las, Tex., 1906. 52 

 hibernation and 

 activity of 

 weevils during 

 normal hiber- 

 nation period: 57-58 



conclusions and summary 95-100 



conditions favorable 41-42 



definition of term 15,95 



development during normal hibernation per- 

 iod 13-14,26,28,66-67,95 



emergence, activity thereafter, nature 50-52 



as affected by acclimatization 42-43 



rainfall 41, 



53,59-61,69-71,91,96,97 

 related to accumulated effective 



temperature 46-48,97 



dim atic conditions , 68-73 , 97 

 effective tempera- 



tures 40-41,43-45 



in 1907 67-82,98 



the field, Victoria, Tex., 1906.. 52-54 

 longevity thereafter 83-90,97-99 



