LOCOMOTIVE ENGINE AND RAILWAY GRADIENTS. 



1G9 



TABLE VIII. 



PASSENGER TRAINS. 



In the transit of passenger trains up long and steep gra- 

 dients, assistant engines are almost invariably employed. 

 They consist of the regular engines for the conveyance of the 

 train, and an auxiliary engine, which is generally in waiting 

 at the bottom of the incline, to assist by pushing at the tail end 

 of the train till the summit is attained. The mean of the 

 load carried and the speed obtained, in Table IX., with the 



z 



