PLATE XXVI 



Fig. I. Slope of bottom north from Coronation Island, South Orkneys. 

 Phasing by loo fathom steps. Speed of ship, 9 knots. Vertical scale, 

 X 972. From 60° 26' S, 45° 55-5' W to 60° 21-5' S, 45° 59-3' W. 

 (Part of Record XXVIII/37.) See Text-figs. 3 (c), p. 46, and 13, 

 p. 66. 



Fig. 2. Slope of bottom approaching Falmouth Bay, Tristan da Cunha, 

 from the North. Phasing by 200 fathom steps. Speed of ship, 

 9-5 knots. Vertical scale, x 10-26. From 36"^ 56-8' S, 12° 19-3' W 

 to anchorage at Falmouth Bay. (Part of Record IV/33.) See 

 Text-figs. 3 (a), p. 46, and 9, p. 55. 



Fig. 3. Approaching Antarctica in the meridian of Greenwich ; confused 

 bottom at 900 to 1000 fm. (1646 to 1829 m.), followed by a steady 

 rise to a depth of 170 fm. (311 m.) close to land. Virtually no 

 continental shelf. Speed of ship, 9 knots. Vertical scale, x 9-72. 

 From 69° 37-4' S, 00° 41' E to 69° 43-6' S, 00° 50-3' E. (Part of 

 Record VII/39.) See Text-figs. 2 {a), p. 45, and 17, p. 88. 



