CHANGES OF INSECTS. 59 



tain animal be a true insect or not. Again, there are 

 exceptional insects, concerning which he will at first be 

 puzzled to decide whether they are in a perfect or imper- 

 fect stage ; but a very little experience and observation 

 will do more for him than the addition of many words in 

 this place ; and he is advised here, and throughout his 

 studies, to turn at once from the written page to an 

 examination of the objects themselves, and thus to 

 exchange words for knowledge. 



