86 horse power. At
the above rates this would be $110 per horse power per year.
Our ratio here is: Electricity, 1; cables, 1.71; horses, 3.38.
This is by no means the whole of the story, for just here must we
compute the depreciation and hence repairs due to time. Let us take
the road figured on heretofore, and make three tables.
In the following I have under each system taken the estimated costs,
allowed a fair per cent. for depreciation, summed up and obtained the
ratios.
Any figure then like interest, etc., which would not affect ratios, I
have omitted.
ELECTRICITY.
Conductors, 1 per cent. $160.00
Engine and dynamos, 5 per cent. 525.00
Cars, 10 per cent. 5,280.00
Roadway, 10 per cent. 2,007.00
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Total. $7,972.00
HORSES.
Horses and appurtenances, 20 per cent. $7,780.00
Cars, 10 per cent. 2,880.
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