64 



BIBEBNATION OF THE COTTON BOLL WEEVIL. 



the Stale. Thus at Dallas s, at Calvert 11, and at Victoria 28 out 

 of every 100 weevils placed in hibernation might have been active 

 during the winter. Of course, it is likely that many weevils were 

 counted twice. On the other hand, to counterbalance this duplica- 

 tion in the number recorded, it should be stated that undoubtedly 

 many weevils were 4 active at intervals between the counts which 

 were either upon the ground or had returned to the ground before 

 the examinations were made. Only those weevils which were found 

 crawling upon the wire covering of the cage were recorded. The 

 temperature conditions as shown for the dates of examination indi- 

 cate that there would be no physiological difference in normal weevil 

 activity upon those dates. The sectional totals indicate that vari- 

 ations in the class of shelter in the different sections exerted little, 

 if any, effect upon the activity of weevils during the winter, with 

 the exception that Spanish moss seemed to keep more weevils from 

 becoming active than did any other shelter. 



WINTER ACTIVITY. 



In most instances when the active living weeviis were recorded 

 those which were found dead clinging to the wire were collected 

 and counted for each section. Undoubtedly a great many weevils 

 fell from the screen before or after dying, so that the records are 

 very conservative in showing the mortality occurring between exam- 

 inations. These records should be considered in connection with 

 w r eevil activity, since the collection of dead stages prevented their 

 accumulation upon the wire, and the number found at each exam- 

 ination must be considered of those surviving and remaining on the 

 ware from a preceding examination and those which emerged subse- 

 quently thereto. 



Table XXXII. — Summary of winter activity as shoicn by counts of dead wet vils. 



DALLAS. 





Date. 







Number of dead weevils found in section— 





Total 

 num- 





1. 



2. 



3. 



4. 



:,. 



G. 



7. 



v. 



9. 



Ki. 



ber 



of 



dead 



wee- 

 vils. 





1907. 



2 

 

 2 



1 



3 



1 

 2 

 3 



4 



1 



34 



2 

 2 



3 





in 7 



10 



4 







77. 





3 





2 



t 

 3 



1 

 1 



672 

 1 





2 

 6 

 3 



7 

 1 



a 687 



February 12 



3 1 

 1 



5 





L3 















Total 



5 



■ 



13 



3 4G 





11 8 



21 



17 



• 

















" Of these, 622 were on cloth on ground, having fallen from the wire. 

 b This total represents 2.6 percent of ail the wee^ ils pul in the cage. 



