MEANS OF TRANSPORT. 



capable of travelling faster than the wind 

 which drives it. 



It is obvious that a wind blowing straight 

 over the stern, in the desired direction of travel, 

 could not drive the boat faster than it is going 

 itself ; and so arises the curious result that in 

 some cases a cross-wind is more favourable 

 to speed in the boat than a wind straight 

 behind of equal velocity. 



