IMM.I \< 9 



The question of credil to the various investigators who have con- 

 tributed feo this bulletin is rather complicated. Mr. E. A. Schwarz 

 studied carefully the hibernation of the weevil al Victoria, Tex., in 

 the winter of L 90 1-2 and his observations have been utilized. Later 

 Mr. Wilmon Newell, secretary of the State Crop Pesl Commission of 

 Louisiana, assisted by Mr. J. B. Garrett, planned and executed i 

 Beries of experiments in the hibernation of t he weevil which was much 

 more extensive than any similar work thai bad been done tip to thai 

 time in this country.. This work was done in cooperation with the 

 Bureau o\' Entomology, and the results, through the liberality of 

 Mr. Newell, have been largely incorporated into this bulletin. Mr. 

 J. D, Mitchell contributed important fads from observations during 

 several seasons, especially with reference to actual winter held con- 

 ditions. Many o\' the details in 1 ho plans for the extensive work of 

 L906-7 were worked out by Dr. W. E. Hinds, who also superintended 

 the extensive tedious work necessary during the following spring. In 

 all this work Doctor Hinds was assisted by Mr. W. W. Vol hers, by 

 Mr. A. C. Morgan, who had charge of the work with the large i 

 near Victoria, and by Mr, C. R. Jones, who was located at Calvert. 

 Mr. Yothers collaborated with Doctor Hinds in the arrangemenl and 

 correlation of the data obtained at the places mentioned and in placing 

 in manuscript form the records of many of the experiments of previous 

 years. For two winters Mr. Yothers carried on special observations, 

 largely of his own planning, as to actual field conditions. In this 

 work he collected large quantities of bolls and various forms of trash 

 in and about cotton fields, and from careful examinations of this 

 material in the laboratory he was able to determine many very impor- 

 tant facts in regard to the several classes of rubbish, or winter shelter, 

 which are most likely to protect weevils and to insure their successful 

 survival through the winter season. 



W. P. Hunter, 

 In Charge of Southern Field Cn 



Insect Investigations. 



