4-4~ an d 4-6-0 Locomotives 63 

 The Midland, South-Eastern and Chatham, 

 London, Brighton and South Coast, and 

 the North British are the remaining principal 

 pre-group British railways upon which the 

 six-coupled tender express engine was not 

 seen. In the case of the two first-named 

 lines certain permanent way difficulties 

 existed, and these could not be overcome 

 without a great deal of expenditure; the 

 Brighton line turned first to " Atlantics ", 

 and then to the heavy tanks, many of them 

 six-coupled, whilst the North British, as a 

 partner in the East Coast route, appears to 

 have found the huge <;< Atlantics ", as on 

 the North-Eastern and Great Northern 

 the other partners equal to all calls made 

 upon locomotive power. 



We can now deal briefly with the various 

 examples of six-coupled express engines on 

 the lines mentioned as adopting them. 

 The North-Western began with Whale's 

 1 Experiment " class of inside 4-6-05; 

 wonderfully efficient engines, but rather 

 heavy on their fuel. This was particularly 

 noticeable from the fact that they were 



