118 



tain niiniber of Aveevils in regions where seppa cotton occnrs by 

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

 ably less importance than the simple practice of cultural methods. 



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

 in the w^arfare against the weevil. They have been designed to poison 

 the insects, to jar them and infested squares from the i)lant and to 

 collect them, to pick the fallen squares from the gi'ound, 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 180.5 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 i^racticable or to offer any definite hope of being even- 

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

 designed to i^ick 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 

 $5,000, has come to the conclusion that mechanical difficulties will 

 always prevent the perfection of such a machine. If it were not j)os- 

 sible to raise cotton profitably Avithout the use of a machine, the situ- 

 ation would be changed materially; but since it is possible to i^roduce 

 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 bibliographj^ 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. 



1843. BOHEMAN, C. II. — Genera et Species Curculionidunvcum Syn- 

 onymia hujus Familite ed. C. J. Shonherr Vol. Y, pt. 2, jip, 

 2:52-233. 



The original description of Anthonomus grandis. 



1871. SUFFRIAX, E.— Verzeichniss der von Dr. Gundlach auf der Insel 

 Cuba gesammelten Riisselkafer. Archiv. f. Naturg. 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. V. — Report of the Commissioner of Agriculture, f. 

 1SS5, p. 279. 



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."' Thir, is the first published record of 

 the food plant and method of injury of the species. 

 21739— Xo. 45—04 8 



