113 



tain number of weevils in regions where seppa cotton occurs by 

 heavily spraying the earliest plants, but this method is of immeasur- 

 ably less importance than the simple practice of cultural methods. 



Many attempts have been made to perfect a machine that will assist 

 in the warfare against the weevil. They have been designed to poison 

 the insects, to jar them and infested squares from the plant and to 

 collect them, to pick the fallen squares from the ground, to kill by 

 fumigation, and to burn all infested material on the ground. The 

 Division of Entomology has carefully investigated the merits of repre- 

 sentatives of all of these classes, beginning in 1895 with a square- 

 collecting machine that had attracted considerable local attention in 

 Bee County. Up to the present time none of these devices have been 

 found to be practicable or to offer any definite hope of being even- 

 tually successful. At one time there was some hope that a machine 

 designed to pick the squares from the ground by suction might be 

 perfected. The experiments, however, have indicated probably in- 

 surmountable difficulties; and an implement concern, after having 

 experimented with the matter fully and after having expended over 

 85,000, has come to the conclusion that mechanical difficulties will 

 always prevent the perfection of such a machine. If it were not pos- 

 sible to raise cotton profitably without the use of a machine, the situ- 

 ation would be changed materially; but since it is possible to produce 

 the staple without the use of any other means than those which enter 

 into cotton culture everywhere, there seems no hope for these machines. 



BIBLIOGRAPHY. 



This bibliography includes only the more important writings which 

 have been published in permanent form. It does not include the 

 many hundreds of titles of articles published in newspapers and in 

 popular magazines. 



1813. Bohemax, C. H. — Genera et Species Curculionidum cum Syn- 

 onymia hujus Familiar ed. C. J. Shonherr Vol. Y, pt. 2, pp. 

 232-233. 



The original description of Anthonomus grandis. 



1871. Suffriax, E. — Yerzeichniss der von Dr. Gundlach auf der Insel 

 Cuba gesammelten Rtisselkafer. Archiv. f. Xaturg. XXXYII 

 Jahrg. 13, pt, 1, pp. 130-131. 



Contains the record of a specimen from Cardenas and one from San Cris- 

 tobal, in Cnba. 



1885. Riley, C. Y. — Report of the Commissioner of Agriculture, f. 



1885, p. 270. 



Contains the sentence ' Another very large species, A. grandis Boh., we 

 have reared at this Department from dwarfed cotton bolls sent from north- 

 ern Mexico by Dr. Edward Palmer. ' ? This is the first published record of 

 the food plant and method of injury of the species. 

 21739— Xo. 45—04 8 



