PERIODICAL CICADA. 133 



Illinois ; J. T. McNeelj, Petersburg, Menard county, Illinois ; Dr. J. 

 F, Snyder, Virginia, Cass county, Illinois; J. Cochrane, Havana, 

 Mason county, Illinois ; Postmaster of Canton, Fulton county, Illinois ; 

 Postmaster of Farmiugton, Fulton county, Illinois ; Stephen Tomp- 

 kins, Fulton county, Illinois; Dr. A. G. Humphrey, Galesburg, Illi- 

 nois ; Tyler McWhorter, Aledo, Mercer county, Illinois. 



TREATMENT. 



The Periodical Cicada cannot be considered, in a practical point of 

 view, as an insect of very serious character. Even if the injury 

 caused by them were more severe than it is, the long period which in- 

 tervenes between their successive appearances, would reduce them to 

 the rank of not more than a third class noxious insect. The damage 

 done by them, as a general rule, amounts to nothing more than a pretty 

 severe twig-pruning, which is out grown in a year or two, by trees of 

 considerable size. But young nursery and orchard trees are often 

 severely cut up by them, and sometimes killed outright. 



All attempts to check or drive away the locusts after they have made ~ 

 their appearance, have proved futile. The only practical rule of any 

 importance respecting them is, to avoid planting a nursery or young 

 orchard upon cleared land, or in the vicinity of timber land, where it is 

 known by experience, that these insects will make their appearance in 

 a few years. 



