At the time of N. У. Ussınes death in July 1911 this trea- 
‘tise was almost ready for the press. Chapters 1—3 were already 
in the press; chapters 4 and 6 had been translated, and apparently 
revised, of chapter 5 there was only the Danish manuscript, and 
the translation had not yet been undertaken. 
According to a wish expressed by Ussing the Committee for 
the geological and geographical investigation of Greenland entrusted 
me with the task of undertaking the publication of the treatise. 
As regards the chapters which were already translated only quite 
formal corrections have been made in the proofs, and the fifth 
chapter has been translated in close conformity with Ussing’s Da- 
nish manuscript. 
O. B. Boggild. 
