580 WORST JOURNEY IN THE WORLD 



as ice : they may be quite soft : they may appear as great inverted 

 pudding bowls : they may be hard knots covered with soft powdery 

 snow. 



Sledging Distances. All miles are geographical miles unless otherwise 

 stated, i statute or English mile = 0-87 geographical mile: 1 geo- 

 graphical mile = 1-15 statute miles. 



Tank. A canvas " hold-all " strapped to the sledge to contain food bags. 



Tide Crack. A working crack between the land ice and the sea ice which 

 rises and falls with the tide. 



Wind. Wind forces are logged according to the Beaufort scale, which is 

 as follows : 



