, then the engine of 169 horse power
represents what must be had. Allowing a generous factor of safety, let
us say that a 250 is all sufficient. This would cost complete and
erected about $12,000. The cable would cost $15.000, and gears, etc.,
$8,000, making a total of $35,000.
The ratio of the three systems stands: Electricity, 1; cable, 1.09;
horse, 1.45.
4th. Construction of tramway.
Figures upon this point must necessarily be either averages or
approximations. The nature of the locality socially, naturally, and we
grieve to say it, politically, has a strong influence upon its
construction. Estimating on single track only, a horse road would cost
as an average $9,000 per mile. With electricity we have several
methods we can avail ourselves of: Surface, costing about $10,000;
overhead double conductor, $15.696; underground, $23,500.
With cable but one method, the underground, is possible. This cost is
variously estimated at from $30,000 to $110,000 per mile; however, the
latter figure is excessive.
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