EMERGENCE IN THE FIELD AT VICTORIA, TEX., IN 1906. 



53 



tions had been made it became apparent that some method must be 

 adopted to enable the weevils found at each examination to be dis- 

 tinguished. At each subsequent examination, therefore, the wee- 

 vils found were marked with a paint of a different color. Early in 

 the season the weevils emerging from hibernation were sufficiently 

 numerous to practically prevent the setting of fruit upon this area. 

 The first weevils of a new generation did not begin to appear until 



Fig. 2. — Chart showing mean average temperature, rainfall, and weevil emergence, Dallas, Tex., March 



to May, 1906. 



about June 20. It was then easily possible to chstinguish between 

 hibernated adults and those wliich were not more than two or three 

 weeks old. It is probable that the oil paints which were used may 

 have been responsible for the death of many of the weevils marked, 

 since it was hardly possible in the field to apply the paints with the 

 necessarv care. 



