xiv PREFACE. 



derable number that have not yet come to our knowledge. These 

 have slender bills ; and feed for the most part oil the larv^ of in- 

 sects, which they glean from the leaves. 



SWALLOWS. 



Common, or Purple Martin, 



White-bellied Swallow, — Above steel blue glossed with green. 

 Bed-bellied, or Barn Sivallow, 

 Chimney Swallow, 

 Bank Sivalloiv, 



GOATSUCKERS. 



Night Hawk, or Great Bat of Virginia, 



^ Chuck-wills-widow, —Inh^ihiis the southern and western states* 

 Whip -poor-zvill. 



Those to whose names an asterisk is prefixed being rare birds 

 in Pennsylvania^ well preserved skins of them would be received 

 as a very particular favour. 



Philadelphia, Feb. I2th, 1811. 



