Atlantic and Pacific Engines 77 



with super-heater, with an inch larger cylin- 

 der diameter and an increase in weight of 

 about two tons. 



That brings us to the end of the " Atlan- 

 tic " type a very popular and useful one, 

 possessing all the advantages of the 4-4-0 

 with the added efficiency due to larger 

 boilers and fire-boxes. 



A good deal of controversy raged round 

 their introduction, several well-known 

 experts arguing that, in view of the much 

 greater expense involved in building them, 

 the results obtained were not worth while. 

 This, I think, accounts for the fact that 

 such pre-group companies as the North- 

 Western, Midland, Great Eastern and South- 

 western never possessed an ' Atlantic ". 

 Certainly, the coming of the 4-6-0, whose 

 arrival on the North-Eastern coincided with 

 the advent of the " Atlantic " on the Great 

 Northern, put a very powerful antagonist 

 in the field. 



In a sense the " Pacific " is as much the 

 successor of the " Atlantic " as it is of the 

 4-6-0, and we may claim that it embodies 



