140 April iy49- 



wife perceived that the woods and foreits of 

 thefe parts had been very roughly treated. It 

 is cuflomary here, when they erecft faw- 

 mills, wind-mills, or iron works, to lead 

 the water a good way lower, in cafe the 

 ground near a fall in the river is not con- 

 venient for building upon. 



April the 16th. This morning I re- 

 turned to Raccoon. This country has fe- 

 veral kinds of fwallows, viz. fuch as live 

 in barns, in chimneys, and under ground; 

 there are likewife martens. 



The Bam Swallows, or Houfe Swallows 

 are thofe with a furcated tail. They are 

 Linnaus's Hirundo rujlica. I found them in 

 all the parts of North America which I 

 travelled over. They correfpond very near- 

 ly to the European Houfe Swallow in re- 

 gard to their colour, however there feems 

 to be a fmall difference in the note. I took 

 no notice this year when they arrived : but 

 the following year, 1750, I obferved them 

 for the firft time on the 10th of April (new 

 ftyle) ; the next day in the morning, I faw 

 great numbers of them fitting on ports and 

 planks, and they were as wet as if they had 

 been juft come out of the fea*. They 



build 



* It has been a fubje£t of conteft among naturalilts, to 

 determine the winter-retreat of Swallows. Some think, 



they 



