152 Vulgar Errors respecting Insects being destroyed, tyc. 



birds, it is clearly not in this indirect mode that frost is 

 popularly, and, as I have endeavoured to shew, erroneously, 

 considered as serviceable, 



I have the honour to be, 

 My dear Sir, 



Your obliged humble Servant, 



William Spence. 



Drypool, near Hull, 

 May 31, 1814. 



