24 
pronounced in 1903 than in 1904. This was due not onl}^ to the more 
favorable weather conditions for bollworms durino- late Juh^ and 
August, but to the general lateness of crops, due to an unusuall}" wet 
spring, which everywhere dela3^ed planting from three to five weeks. 
The following estimates of bollworm injur}^ to cotton in several 
counties of Texas during 1903 have been made from all obtainable data, 
including personal investigations, and will illustrate the possibilities of 
injury of this species under exceptionally favorable conditions: 
Table II. — Estimated hollworm injury in certain counties of Texas in 1903. 
County. 
Percentage 
of crop 
destroyed. 
County. 
Percentage 
of crop 
destroyed. 
20 to 25 
15 to 20 
20 to 25 
8 to 10 
8 to 10 
15 to 20 
50 to 60 
40 to 50 
Henderson 
Delta . 
50 to 60 
Limestone 
Hunt 
30 to 35 
Falls 
25 to 30 
Bell 
Kaufman 
25 to 30 
Van Zandt 
20 to 25 
Fannin . 
It should not be understood that injury was confined to these coun- 
ties. The injury, in fact, was quite ge «ral over the principal cotton- 
producing counties of the State. Likewise in Louisiana, Mississippi, 
Fig. 1— Map of area infested by bollworm (from Quaintance and Bishopp). 
Indian Territory, and Arkansas bollworm injury was ver}^ severe. 
The area most seriously injured in 1904 is shown by the shading in the 
accompanying illustration (tig-. 1). 
From evidence collected and from personal investigation it is believed 
that an average annual injury of 4 per cent to the cotton cror>s of the 
