XXIV INTEODUOTION". 



out doubt, of the same entomological classification. 

 The habits of those unknown will be somewhat similar 

 to those existing in Europe. The author's idea in 

 giving these is to show the reader how methods of de- 

 struction can be deduced from a knowledge of their 

 manner of living, and, however mimerous these insects 

 are, it is possible to get rid of them ; and, if collected 

 in a mass, can find some direct industrial application. 

 This chapter is very different from any thing hitherto 

 presented to the public, and it is to be hoped for this 

 reason, if for no other, it will not be without interest. 



The whole treatise has been most elaborately and 

 carefully illustrated by drawings made by the author 

 himself, or procured from beet farmers, distillers, and 

 others in France. 



In conclusion, let it be remembered that this work 

 on the sugar beet has not been, like others, written with 

 a view to self-interest. The author has no lands to 

 recommend, is not a manufacturer of a given fertilizer, 

 etc., but has endeavored to ascertain the truth, and 

 this with the sole idea of yielding information upon a 

 subject of which but little is known in America, and to 

 assert that in the !N^orthern States there exist compa- 

 ratively few lands which will not yield, if scientifically 

 planted, beets equal if not superior to those of Europe ; 

 not in all cases with profit, for the elements the plant 

 requires. for its development might be wanting, and 

 these must be furnished, and would render the expense 

 far too great ; but it can be justly said that the excep- 

 tions make the rule. 



