ENTOMOLOGY. 121 



to the neglected study of Ichthyology, by ex- 

 hibiting the bountiful prpvision which is made, 

 for various kinds of fish, at different periods of 

 the year ; and the zealous disciple of the excel- 

 lent Walton would likewise be enabled better to 

 account for his occasional disappointments on 

 days apparently favourable for fly-fishing, by 

 learning, that trout are frequently too much en- 

 gaged in seeking their food amongst the various 

 kinds of larvae at the bottom of the river, to pay 

 any attention to the more active flies upon its 

 surface. 



Organization being the only safe ground-work 

 of any system of Zoology, and diversity of 

 structure being no where more apparent than in 

 the wonderful adaptation of some insects for land 

 and others for water, I apprehend a better de- 

 fence of the outline I have ventured to recom- 

 mend can hardly be required than this, that, 

 whilst it is in strict conformity to those rules 

 which govern the more learned naturalist, it 

 would, at the same time, afford a resting-place 

 to such as, with great enthusiasm in the pursuit, 

 are not sufficiently versed in etymology to enable 

 them easily to unravel or remember the more 

 refined derivations. 



Considering the interesting variety of insects 

 Q 



