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ftance of a powerful inftincl imprelTed by the 

 Creator. It is ilrange that thefe unthinking 

 creatures Ihould know the moil proper times for 

 their pafiage, when to come, and when to go. 

 — No doubt but the temperature of the air, as 

 to heat and cold, and their natural propenfity to 

 breed their young, are the great incentives to 

 thefe creatures to change their habitation -, but 

 yer, that they fhould comply with thefe incen- 

 tives, and annually (hift their habitation at all, is 

 wonderful. 



'H \o ■ .. 



" Again, that they fliould know what way to 

 fteer their courfe, and whither to go, is fomewhat 

 amazing to confider. What inftind is it that 

 moves a poor foolifh bird to venture over vaft 

 tra6ls of land, and efpecially crofs large feas, in 

 queft of frefh and farther conveniences ? If it be 

 faid, that by their high afcents into the air, they 

 can fee acrofs the feas, yet what fhould teach or 

 perfuade them that that land is more proper for 

 the purpofe of breeding and feeding than this ? 

 that Britain, for inftance, fhould afford them better 

 accommodation than Egypt, than the Cana- 

 H ries, 



