1^ 



was the usual method of sifting- from a sack. Eail^- in the season 

 three examinations were made of lots of ten plants in each plat to 

 determine the number of weevils. 



Table IV. — Ntunber of adult ireerils found, Paris-(/reeii experiment, Calvert, Tex. 



Plat. 



Number 



of 

 weevils. 



Paris green ; July 21 



Check ■••do---- 



Parisgrecn Aug. 4 



Check •••do.... 



Paris green ! Aug. 15 



Check ...do.... 



Later two examinations were made to determine the relative numbers 

 of infested and uninfested squares and bolls. 



T.\BLE V. — Infestation of squares and bolls, Paris-green exjyerimoit, Calvert, Tex. 



These examinations show only a very slight difference in percentages 

 of infestation, which was in all cases so great as to prevent flowering. 

 It will be seen that the poisoning had no appreciable effect. 



The poisoned plat yielded 1,217 pounds of seed cotton and the check 

 1,070 pounds, which is an excess of 117 pounds for the poisoned plat. 

 Reckoning seed cotton at 3i cents per pound there was a gain of $5.15. 

 The total co.st of poison and labor was $17, making a loss of $11.85, or 

 $1.71 per acre. 



EXPEEIMENTS CONDUCTED BY VARIOUS PLANTERS. 

 Mr. J. C. Houston, Floresville. 



The 2-acre field poisoned was isolated. There was a road on one 

 side, pastures on two sides, and a house on the fourth side. The cotton 

 was seppa and received five applications of poison at the rate of 1^ 

 pounds per acre, in addition to which one-half of the field had a fur- 

 ther application of 3 pounds. All applications were made before 

 June 1 and by the sack-shaking method. 



On June an examination of this field showed that 30 per cent of 

 the squares were infested, and on July 2, when 71 per cent were 



211 



