' The abard-bome beetle, ■with his dro^vsy hume, 

 Hath run$ night's jai^Tjniu^ peal." 



MACBETH, ACT III. 5C. II- 



From caterpillars of the several kinds mentioned 

 by Shakspeare, and from the consideration of the 

 various forms of the mouth observable among in- 

 sects, we now advance to their habits and most 

 remarkable peculiarities. I hope that the " gentle 

 dulness" which may have pervaded many parts of 

 my former letters will now be dispelled, and that 

 you may become interested in attending to the 

 working of those various instincts with which the 

 beings we are considering have been endowed. So 



