
 
		VI PREFACE. 
 were first made known by Sàt,  in the Account of Long’s Expedition  
 to the Rocky Mountains,  a work that jhas  justly acquired  a high degree  
 of celebrity,  and  is  no. less  creditable  to the nation than to the  
 individuals  concerned in its production. 
 The  second volume will be, (|évoted; to water birds,  some of which  
 are common in the very city of Philadelphia.  The third will contain  
 birds of both  sub-clashes  indiscriminately,  and will chiefly consist of  
 Mr. Prams’s  gleanings  in Florida.  > 
 The  classification and synonymes of Wilson, were tolerably accurate  
 for the time he wrote, but being far behind ffie present advanced  
 state  pf.  science,  .correction-, is  rendered  indispensable.  We  shall  
 therefore  add  a  .synopsis  of  all  the.  species,  inhabiting^ the; United  
 States,  arranged-in orders,  families,  genera,  and _sub-genera,  agreeably  
 to  the  best  authorities  of  our; time,  and  our  own  impressions  
 relative  to  natural  affinities.  In  order, that  any  one,  who  desires  
 to  gain  a  scientific  acquaintance  with American  Ornithology,  may  
 require  no other  aid  than what can.be derived  from Wilson’s  and  
 the  present work  alone, , we  shall  subjoin  a  general  disquisition  on  
 birds,  and  a   glossary  of  ornithological  terms,  which, - with  the  
 synopsis,  have  .occupied  the  principal  portion of  the  author’s  care».,  
 and will constitute  a complete work,  to  be  published  in  a . separate  
 volume.