From Cape of Good Hope to Melbourne. 89 



by them, and perhaps to show the direction in which a future 

 attempt to penetrate towards the South Pole might be suc- 

 cessfully accomplished. 



The section represented on Plate 12 traverses the Southern 

 Ocean — not in a direction due east, but forms two sides of a 

 triangle, the apex of which just touches the Antarctic Circle 

 (Plate 1). The western side of the triangle is formed by the 

 track of the " Challenger " from the Cape of Good Hope to 

 Kerguelen Land and the Ice-barrier; the eastern side by the 

 track of the ship between the latter and Melbourne. 



The following table gives the surface-temperatures observed 

 while crossing the "Agulhas Current" — the great equatorial 

 current of the Indian Ocean. 



TEMPERATURES OBSERVED BETWEEN THE CAPE OF GOOD HOPE 

 AND MARION ISLAND, AND IN THE AGULHAS CURRENT. 



