Atlantic and Pacific Engines 73 



For more than twenty years the " Atlan- 

 tics >: answered all calls made on them, 

 although on practically every other great 

 railway the six-coupler had been adopted 

 as being something better still. As we shall 

 see the Great Northern took another for- 

 ward step, which meant that the " Atlantics ' 

 were, in 1923, in the same position as the 

 " singles " were twenty years earlier. 



The great feature of the " Atlantics ' 

 had been the steaming properties of their 

 huge boilers; thus very large trains had 

 been hauled without assistance, whereas on 

 other lines piloting had been freely resorted 

 to with similar loads. 



A year after the " Atlantic " appeared on 

 the Great Northern an extremely fine 

 specimen of this type appeared on the 

 Lancashire and Yorkshire, unique amongst 

 " Atlantics " in that it had inside cylinders. 

 These had massive boilers with cylinders 

 19x26, and large driving wheels yj feet in 

 diameter. The boilers were 15 feet long 

 with a girth of 4 feet 10 inches. As the 

 tenders of these engines were fitted with 



