Profiles along the ship's tracks were constructed from the bathymetric data. 

 The locations of these profiles are shown on Figure 2, and the profiles are pre- 

 sented as Figures 3 and 4. The vertical exaggeration of the profiles is 20 to 1, 

 and the horizontal scale Is 15 nautical miles per inch . Since the Edo Echo- 

 Sounder Is not a precision Instrument, small bathymetric features (less than 10- 

 fathom relief or less than one percent of the depth) were ignored, and no attempt 

 was made to delineate microbathymetry. Corrections for positioning errors were 

 made by adjusting the ship's tracks where the profiles intersected until depths 

 agreed . Corrections were not made for ship's draft (4 1/2 fathoms) nor for the 

 sound velocity of the water column (sound velocity was generally less than 4,800 

 feet per second, the calibration velocity of the echo sounder). 



A chart describing the bathymetry of the eastern Ross Sea and Sulzberger Bay 

 and the ice cap topography on the contiguous area of western Antarctica is pre- 

 sented as Figure 5. This chart was constructed from the USS STATEN ISLAND 

 data, U.S. Navy H .O . Charts 6631 (1961 ed .) and 6637 (1961 ed .), and U . S . 

 Air Force W.A. Chart 1823 (1953 ed.); supplemental bathymetric data collected 

 by USS GLACIER (AGB-4) during Deep Freeze 62, and publications by Richard E. 

 Byrd (1933) and S . E. Roos (1937) were also used in the preparation of this chart. 

 The contours tracing the continental slope are dashed because of the paucity of 

 soundings in that area, and the dashed 100-fathom closed contours northwest of 

 Guest Island and Rupert Coast were based on the theory that chronically grounded 

 icebergs mark the position of submerged ridges. 



