274 О. HELMs. 
Н. WINGE: Grønlands Fugle (Meddelelser om Grønland XXI). — This 
contains all that was known of Greenland’s birds up to 1897. 
H. ScnaLow: Die Vögel der Arktis (Fauna arctica 1904). — This deals 
with all the birds in the north polar areas, including those in East 
Greenland. There is a comprehensive list of literature. 
Е. LEHN ScHI@LER: Danmarks Fugle, Vol. II, 1926. — In this volume, 
which will be published in the late summer of 1926, is a survey of 
all the birds in Greenland, including those in East Greenland, with 
our knowledge of them brought up to the most recent date. 
