115 



II were taken in their order at varying' distances from the road. 

 Block III was some distance from the others. In this case lot 1 was 

 taken along the edge on the side toward the other blocks, while lot 2 

 was taken in the middle of the block. 



Table XXX. — Progress of infestation, field 2, Victoria, Tex. 



Block. 



Lot. 



Date. 



Number 

 of 



squares 

 exam- 

 ined. 



Number 



of 

 squares 

 infested. 



Percent- 

 age of 

 infesta- 

 tion. 



Remarks. 





1 

 2 



3 

 1 

 2 

 3 

 1 

 2 



1903. 

 /August 6 



225 

 414 

 210 

 200 

 362 

 185 

 180 

 202 

 136 

 150 

 200 

 218 

 259 

 166 

 330 



45 

 351 



12 







241 



62 

 156 



31 



105 



9 



130 



91 

 228 



38 

 290 



20.0 

 84.8 

 5.7 

 0.0 

 66.6 

 33.5 

 86.7 

 15.3 

 77.2 

 6.0 

 65.0 

 41.7 

 88.0 

 22.9 

 88.0 



Infestation began in this corner. 



JLot 2, in middle of Block I. 



/Lot 3, opposite corner of block from 

 / lotl. 



/Lot 1, near public road, passing lot 

 J 1 of Block I. 







I 



August 6 





f do 





\ August 22. 





f Augu^'t 13 





i August 24 



i 



/August 13 





II 



1 August 24 







(August 13 







\August24 







/August 17 



jEdge of block. 

 [Middle of block. 





/August 29 



III 



/August 17 





/August 29 









From a study of Block I it is evident that infestation began some 

 time in July, since when first found it was entirely restricted to a 

 small area. A study of each block chronologically shows the steady 

 but rapid progress of the weevil, as does also a comparison of the 

 three blocks at the nearest possible dates. The tremendous activity 

 of weevils in midsummer and the possible rapidity of their spread is 

 clearly shown in this field. 



A study of two other fields yielded practically similar results. The 

 dates of examinations, with the percentages found in each case, will 

 be given. In field 3 there was found, upon June 2, 3 per cent of infes- 

 tation; on July 16, 25.9 per cent; on August 15, 65.9 per cent. This 

 field was from native seed and was planted about three weeks earlier 

 than field 4, which was of King seed, and just across a turn row from 

 field 3. In field 4 infestation began very late, as on August 8 there 

 appeared to be only 2 per cent and on August 15, 23.6 per cent, while 

 on August 26 it had increased to 91.5 per cent, which is about the 

 usual percentage of maximum infestation. 



