Hydrographical Observations from the Danmark Expedition. 283 



Like the hydrographical observations to be mentioned later they 

 were only taken as the opportunity permitted, the progress of the 

 vessel being the most essential, the measurements coming second. 



For sounding the great depths in the waters east of the Con- 

 tinental Bank or Shelf we used an ordinary 25 kg. lead. One could 

 tell when the lead struck the bottom from the fact, that the time 

 taken for a certain number of meters (100) to run out suddenly in- 

 creased. The method of taking the soundings will be described in 

 more detau, however, under the hydrographical observations. 



On the Continental Bank Captain С Clausen's Control Depth- 

 sounder was used, with 600 m. line. 



The depth-sounder was in constant use and worked satisfactorily. 



The bottom-samples were taken up by smearing tallow on the 

 end of the lead or depth-sounder. They were handed over later to 

 Cand. polyt. Jarner, the geologist of the Expedition, from whom a 

 detailed report regarding them may be expected. 



The positions of the soundings were observed as a rule. In such 

 cases the situation has been determined in the usual manner by mov- 

 ing a forenoon or afternoon position line to cut an observed midday 

 or midnight latitude. Such a position is noted as "obs.", to contrast 

 with a calculated position, where both latitude and longitude have 

 been calculated by deadreckoning, which is noted by "cal.". Where 

 nothing is noted at noon position, only the one part (latitude or 

 longitude) has been observed, the other calculated. 



b. Observations. Soundings in the Gtreenland Sea. (Table 1). 



Dat€ 



Time 



X. Lat. 



W.Long. 



Depth 

 m. 



Nature 

 of bottom 



Remarks 



30/vii 06 



10 p.m. 



74°45' ■ 



3°23' 



2080 



No bottom 



Position observed. Series III 



1/VIII - 



8 - 



75°27' 



10°00' 



2440 



Soft 



— — — IV 



2/viii - 



10.35 p. m. 



75°43' 



10° 15' 



840 1 



Mud 



— — — V 



3/viii - 



9 a. m. 



75°54' 



10°00' 



823 



Clay 



— — 



3/viii - 



10 p. m. 



76°05' 



10°50' 



300 



Soft 



— — — VI 



4/vm - 



6.30 p. m. 



76°06' 



10°55' 



310 



— 





6/VIII - 



2 a. m. 



75-45' 



12°27' 



400 



— 





8/viii - 



1 — 4 p. m. 



76°00' 



14°34' 



310 1 



— 



— — — VII 



9/viii - 



1 a. m. 



75°57' 



14'=44' 



300 



— 





10/viii - 



10 - 



76°06' 



15°46' 



180 



— 





11/viii - 



3 - 



76°05' 



16°04' 



170 



Clay 



— — — VIII 



— 



11 - 



76°02' 



16°14' 



150 



Clav 



— — — IX 



12/vm - 



10 - 



76°10' 



16=44' 



83 



Sand 









11 - 



76°11' 



16°56' 



95 



— 









12 noon 



76°11' 



17°05' 



76 



— 









1 p. m. 



76=11' 



17°12' 



110 



Fine Sand 









2 - 



76П1' 



17°22' 



90 



— 









3 - 



76°11' 



17=32' 



300 



No bottom 





— » 



4 - 



76°11' 



17''41' 



; 220 



Clay 









6 - 



76°12' 



17°50' 



! 200 



— 









6 - 



76П2' 



17=56' 



150 



— 





— 



7 - 



76°14' 



18=09' 



170 







