TO 



WILLIAM SPENCE, Esq., F.R.S., F.L.S., 



Author of the " Introduction to Entomology," &c. 



Dear Sir, 



With your permission the following pages are 

 dedicated to you, as a testimony of high esteem and 

 respect; and in order to show you that your own 

 labours have borne fruits ia the minds of others, who, 

 desiring to benefit by your praiseworthy example, have 

 devoted a few of their leisure hours to the task of 

 investing Natiiral History with popular interest. 



THE AUTHORS. 



