Building of a Locomotive 121 



the rounded shape with which we are so 

 familiar. The engine we are interested in 

 is one of a batch of ten goods engines of 

 the usual wheel formula o-6-o, but quite a 

 modern one you may be sure. While many 

 railways have the eight-coupled goods, the 

 old six-coupler is still made in large quan- 

 tities. If a census of engines were taken 

 and classified according to their wheel for- 

 mula, the o-6-o would easily be on top. 



The boiler of the engines we are to inspect 

 is made in three sections and we note with 

 surprise that this boiler is built up on end, 

 so that it towers right above us, the fire- 

 box end being at the bottom of the boiler 

 tower. The centre section seems quite 

 simply made, but a glance at the fire-box 

 end shows many curious things. 



Very great care has to be taken with this 

 important section of the locomotive. There 

 are really two sections the inner and the 

 outer fire-box. Before copper was so dear 

 the inner fire-box was always made of this 

 useful metal, now, however, steel is largely 

 used. We are told that the inner fire-box 



