LOCATION. 1$ 



and heavier engines in the ratio of 15% increase of cost per 

 train-mile for doubling weights on driving wheels. The total 

 cost of assistant engine service should be divided by the num- 

 ber of trains served. 



Passenger trains are but little affected in number or length 

 by some classes of rise and fall and gradients, and should be 

 excluded in all such cases. 



For the purpose of comparison capitalize the annual cost 

 of train expenses at 6%. 



DISTANCE. 



Minor changes not aggregating over two miles, in an en- 

 gine stage, do not usually affect train wages, nor track force; 

 train expenses and renewals are slightly affected. 



The capitalized value of this class of distance per daily train 

 per annum may be considered as 25 cts. per ft., to which 

 should be added its construction cost, at say $3 per ft, when 

 the actual cost is not known. 



Greater changes, but not adding to the number of engine 

 districts usually increase both train wages and track force. 

 The assumed value of this class per daily train per annum ia 

 60 cts. per ft. ($3,168 per mile). The actual construction cost 

 should be added to the total thus obtained. 



Considerable changes, adding to the number of engine dis- 

 tricts and the number of trains operated, should be valued in 

 accordance with the ascertained cost of similar service under 

 similar conditions, but otherwise may be valued on the basis 

 of $1 per train-mile, equivalent to $6,083 capitalized value per 

 mile of distance per daily train per annum, adding all con- 

 struction cost of railway and extra equipment to the amount 

 obtained by multiplying this sum by the actual number of 

 daily trains (each way). 



The effect of distance on receipts is sometimes most serious, 

 and a still further sum must be added in such cases, when 

 the effect is sufficiently tangible. 



CURVATURE. 



The cost of operating curvature varies with the angular 

 degrees of curvature operated, and is but little affected by the 

 length of curve radius. 



