166 NATURAL HISTORY OF SELBORNE 



that they can subsist longer is undeniable. The second 

 is, that this uncommon event, as it was owing to the loss 

 of the first brood, so it corroborates my former remark, 

 that swifts breed regularly but once ; since, was the con- 

 trary the case, the occurrence above could neither be new 

 nor rare. 



P.S. One swift was seen at Lyndon, in the county of 

 Rutland, in 1782, so late as the third of September. 



