Eocperiencc with an Oiitbrcah- of Grasshopper. 269 



field of cane just a few leaves of the plants in the outer rows 

 were observed to be attacked, and only to a slight degree. 



As stated before, the planter had failed to get any effective 

 results from the placing of poisoned bran at the edges of 

 weedy margins of his fields, and neither had he found any dead 

 hoppers in the weeds where he applied Paris green and lime, 

 these materials having been mixed at the rate of one part of the 

 former to fifteen parts of the latter. 



After returning to Baton Rouge on the following day the 

 writer advised the station director respecting the injuries and 

 further danger of attacks due to the myriads of grasshoppers, 

 against which the attempts to check their invasions into the 

 cultivated fields had proved ineffective. A decision was 

 reached to appeal by telegram to the Federal Bureau of En- 

 tomology'' for cooperative assistance in an effort to determine 

 some practical means of protecting the crops from ravages by 

 the insects. In prompt response, Mr. J. L. Webb, an agent 

 stationed at Crowley, La., came to the vicinity, where he was 

 joined by the writer on June 14. Under Mr. Webb's direction, 

 just previous to joining him, a quantity of Criddle mixture had 

 been prepared and exposed in open places along the edge of 

 cornfields on the planter's land. 



After making a tour of the fields together, we concluded 

 that the attacks by the grasshoppers were not extensive enough 

 to excite fear of very serious damage to the crops, since both 

 cotton and corn generally appeared to be growing ahead in 

 spite of depredations. Most of the surviving cotton plants 

 which had sustained the brunt of attacks in the edge of fields 

 on the distant plantation situated south of the railroad gave 

 promise of putting out a leaf expansion in excess of what 

 would likely be devoured by the hoppers that were still ob- 

 served to be busily feeding on the growth, though occurring 

 only in scattered numbers. No marked increase in the num- 

 bers of invading insects was noticeable. The plants that had 

 been treated with plaster of Paris seemed to have escaped 

 further damage, except in some cases where stems had been 

 gnawed. 



Although the effects of depredations on corn were quite 

 marked throught the fields, being most severe at the edges, 

 yet the attacks has caused little harm to the growth other 

 than the impairment of the lower and middle blades, which 



