14 



as also its percentage of the total crop of Texas for each year. The 

 figures used in all cases are the number of bales ginned to December 

 13 of each year as given by the Census Bureau. 



Table I. — Comparison of the cotton crop of eight counties in Texas for the years 1903-1906. 



County. 



Collin , 



Cooke , 



Den ton 



Fannin , 



Gru vson - 



Hunt 



Montague 



Wise 



Total for eight counties given above 



Total for Texas 



Percentage of Texa.s crop grown in eight counties 

 given above 



Number of Number of Number of Number of 

 bales, 1906. bales, 1905. bales, 1904. bales, 1903. 



46,902 

 17, 018 

 25,176 

 57,241 

 31,063 

 54,186 

 30,568 

 32, 304 



294,458 



3, 486, 365 



8.44 



31,035 

 18, 910 

 26,066 

 35,887 

 31, 807 

 27, 359 

 30,069 

 82, 320 



86,128 

 28,048 

 46,466 

 81, 031 

 81,878 

 66,658 

 36, 270 

 40, 181 



233, 453 



465,650 



2,172,881 1 2,953,067 



55,995 

 17,887 

 31, 778 

 40, 314 

 48,770 

 45,453 

 27,370 

 30, 014 



297, 681 



2, 171, 088 



13.71 



It is notable that the crop produced in these eight counties of Texas 

 in 1906 constitutes but 8.44 per cent of the total crop of the State, 

 while in 1904 — a year of comparatively slight boll worm injury — the 

 crop of this area was 15.77 per cent of the State's production. In 

 1903, a year of unusually heavy bollworm injury, the area under dis- 

 cussion produced 13.71 per cent of the crop of Texas. This com- 

 paratively large percentage may be explained by the fact that severe 

 bollworm injury Avas more general during that year, and less severe 

 in this section than in those counties in the extreme northeastern part 

 of the State. The reduction of the total crop of Texas by the rav- 

 ages of the boll weevil in 1903 also caused the percentage of the crop 

 grown in these northern counties to appear larger, while in 1906 the 

 crop produced in other parts of the State was exceptionally large, 

 thus correspondingly reducing the percentage of the crop produced 

 in this area of heavy bollworm damage. 



The accompanying diagi^am (fig. 4) shows the approximate area of 

 bollworm injury to cotton in Texas, Indian Territory, and Oklahoma 

 during 1906. 



MEANS OF CONTROL. 



The control of the bollworm as compared with many insects pre- 

 sents unusual difficulties. However, as in the case of most insects, a 

 careful study of its life history and habits has revealed certain facts 

 which, if taken advantage of, render control quite certain. 



CULTURAL METHODS. 



Some planters seem to have gained the idea that when cultural 

 methods are spoken of reference is being made to some complicated 



290 



