132 ASSOCIATION OF ECONOMIC ENTOMOLOGISTS. 



pinned, or a small glass plate, and the object may then be put to any 

 desired angle or position with a touch. He expressed his opinion 

 that enlargements should be used more in insect photography for 

 publication. The great temptation was to attempt too great an 

 enlargement immediately from the object. A clear, sharp negative, 

 natural size, is much preferred, as it can then be enlarged as desired 

 by making an enlargement from the negative. Mr. Sanderson stated 

 that the effect of the cotton leaf -worm, as shown to Mr. New^ell, 

 had been frequently published in southern Texas by publishers there, 

 and that they found the weevil much less abundant the following 

 spring after a fall in which the caterpillar had attacked the foli- 

 age. He believed the leaf-worm to be a most valuable ally, and 

 pointed out the fact that usually the use of the leaf-worm did 

 not occur until late in the season, so that with the growth of early 

 cotton for the boll weevil the leaf-worm would rarely do any real 

 injury. He deprecated, hoAvever, the tendency to place much empha- 

 sis upon the Avork of the leaf-worm as having a tendency to encour- 

 age the planters in their failure to destroy the cotton stalks in the 

 fall by burning. Although the work of the leaf-worm should be 

 encouraged by stopping the use of Paris green on the foliage for 

 its destruction, it Avould be unfortunate if the planters should come 

 to depend upon it. 



He believed that the elementary solution of the control of the 

 boll weevil depends upon the destruction of the stalks in the fall, 

 and stated that so far as he Avas aAvare no experiments had demon- 

 strated the value of this procedure upon individual farms if not 

 adopted by neighboring farms, and that this seemed to be a most 

 important matter. The value of the fall destruction of the stalks 

 had been realized by entomologists and reconnnended by them from 

 the first, but had been practically neglected by planters in general. 

 He stated that observations made by him at Texas College shoAved tlie 

 undoubted value of the destruction, even upon one farm, but that 

 the records, though convincing to an entomologist, would not prove 

 the matter to the average planter. 



He suggested the great desirability of an experiment on a large 

 scale, taking in several square miles, Avhere the stalks might be 

 destroyed in the fall, so that the value of this method could be 

 demonstrated on a large scale. The success of the groAving of early 

 cotton Avith thorough culture in Texas is due to the fact that farmers 

 had seen an actual demonstration of the method on a large scale, and 

 he believed that the burning of the stalks required a similar demon- 

 stration. He suggested the possibilities of such an experiment to 

 the Louisiana crop-pest commission, who, he understood, had con- 

 ditions under Avhich they could prosecute such an experiment. Had 

 the State of Texas furnished funds for such work, he should have 



