6 0. B. B0GGILD. BOTTOM DEPOSITS. [norw. pol. exp. 



of these deposits, which, as already stated, occupy a peculiar position among 

 the various marine bottom-deposits. 



Among the works that I have employed in the preparation of the present 

 treatise, I will here confine myself to a mention of the following : Report of 

 the Challenger Expedition on Deep-Sea Deposits, by F. Renard and Sir John 

 Murray, Report of the Norwegian North Atlantic Expedition, Part IX, 

 Chemistry, by Ludvig Schmelck, and Report of the Danish Ingolf Expedi- 

 tion on the Deposits of the Sea-Bottom, by 0. B. Boggild and of the Danish 

 Expedition to East- Greenland 1900 by the same author (Meddelelser om 

 Gronland. Vol. 28). 



All local information concerning the hydrography of the regions here con- 

 cerned, is to be found in the very detailed treatise of Nansen: The Oceano- 

 graphy of the North Polar Basin; Vol. Ill, No. 9 of this work. 



