60 



all the fiill^v corrected offshore echo and wire soundings were care- 

 fully transferred. Next, the various land areas and the depth values 

 that had been obtained by others about Davis Strait were entered 

 on this chart. The charts from which already plotted depth values 

 were taken include : 



B. A. Chart 235, marked '' Small corrections, 1922-3.15." 

 B. A. Chart 1422, marked " Large corrections, March 16, 1928." 

 B. A. Chart 2060B, marked " Small corrections, April, 1927." 

 B. A. Chart 112, marked " Small corrections, September, 1923." 

 B. A. Chart 263, marked " Small corrections, October, 1925." 

 Canadian Chart 405. published in Mav, 1928. 

 H. O. Chart 980, marked ^' Small corrections, January, 1928." 

 H. O. Chart 2440a, marked '' Edition of September, 1927." 

 H. O. Chart 2440b, marked " Small corrections, February, 1927." 

 H. O. Chart 1412, nuirked '' Small corrections, July, 1928." 

 H. O. Chart 955, marked '' Small corrections, December, 1930." 

 Besides depth values obtained from the above charts, a number of 

 corrected echo soundings obtained by the international ice-patrol 

 vessels just north of the Grand Banks in 1930 Avere used. Also 18 

 depth values observed by tlie German oceanographic ship Meteor 

 oft' Cape FareAvell, between 1928 and 1930, were furnished for use 

 by the Institut f iir Meereskunde an der Universitat, Berlin. Finally, 

 19 soundings obtained by the nonmagnetic research vessel Carnegie 

 while south of Greenland, during her last cruise, were plotted. These 

 last depth values were furnished by the Carnegie Institution of 

 Washington, D. C. After all available depth values had been entered 

 on the large polyconic chart, the various contour lines Avere drawn. 

 Next, the land areas and the contour lines were transferred to a 

 smaller polyconic chart of the same region. The resulting bathy- 

 metrical chart is show^n here as Figure 51. 



Future expeditions equipped with sonic depth finders will un- 

 doubtedly modify the details of the above chart, especially in the 

 areas where there are still few or no soundings. It is believed, how- 

 ever, that the major details of the depths of the Davis Strait region 

 have been brought out on it accurately, and it is presented here as 

 the most important bathymetrical result of the Marion expedition 

 of 1928. 



