46 Book of Locomotives 



same trains as their most costly brethren of 

 the eight-footer class, and it is said that in 

 the point of speed they were rather more 

 fleet. Their yj-foot drivers, with inside 

 cylinders i8|x26, proved an ideal com- 

 bination : when Ivatt himself wanted to build 

 a dozen singles for use on his lighter 

 expresses he took the general form of the 

 Stirling machines, gave the type a leading 

 bogie, a much bigger boiler, and found that 

 they did better than his own four-coupled 

 engines, but necessarily not so well 

 with heavy trains as the much stronger 

 " Atlantics ", which he also placed in 

 service soon after taking charge at Don- 

 caster. 



These fine machines were lined up as a 

 whole and scrapped in the last year of the 

 War. As a class they were the last singles 

 to be built in Britain, the final engine coming 

 out in 1901. They must have had years of 

 good work in front of them, but a new 

 locomotive chief had no time for what he 

 considered a truly obsolete class, which 

 numbered so few engines, and yet were 



