SHARE OF INSECT CONTROL IN WEEVIL MORT.VLTTY. 



25 



1906. — The data on llie mortality of the weevil in ]!)()() may there- 

 fore bo condensed and tabulated as follows: 



Table VII. — Boll-weevil mortality in 1906. 



Table VIII. — The hypothetical or weighted average mortality of the holliceevil, 1906.^ 



1 Given 10,000 weevil stages. 



1901 . — The mortality during 1907 was 54.27 per cent when figured 

 from the total number of stages and total mortality, thus showing a 

 decrease of 1.54 per cent from the mortality of 1906 figured in the 

 same manner. The parasitism showed an increase of 4.01 per cent. 



Table IX. — Boll-weevil mortality in 1907. 



