VI PREFACE. 



compiled from published and unpublished documents, 

 and other sources, a catalogue of the birds that have 

 been observed in Greenland. 



The nomenclature and classification I have fol- 

 lowed is that adopted by the American Ornitholo- 

 gists' Union. 



A. T. HAGERUP. 



ViBORG, Denmark. 



