Development of Locomotive 29 



went to the scrap heap in 1907. Notice the 

 name of these classes ; here we have another 

 reason for naming the locomotives. The 

 " Problem " and the " Precedent " were the 

 first engines of their type, and so we find 

 it easy to remember what they stand for. 



Then, on the North- Western, we found 

 the full trial of compounding, first with 

 two, then with three, and finally with four 

 cylinders. 



This phase passed with its introducer, 

 Mr. Webb, who held the reins at Crewe 

 for nearly forty years. When Mr. Whale 

 came along he designed his " Precursors " 

 (wheel formula 4-4-0), fine engines, which 

 were to all intents and purposes, greatly 

 enlarged editions of the famous " Pre- 

 cedents ". Not quite content with his fine 

 machines Mr. Whale copied the idea already 

 being tried on many of our big railways in 

 adapting what had always been considered 

 the wheel formula of the goods engine 

 for passenger work. That was, of course, 

 the six-coupled engine, plus a leading 

 bogie. Thus we find what were called the 



