The current required to run a street car is about thirty amperes, and
an electromotive force of about 180 volts. If cars are run in
connection with an incandescent light station, we can arrange our
apparatus so that we can use an E.M.F. say of 110 volts, and then we
can put in a smaller number of cells with a larger capacity that will
give a corresponding horse power. We can charge such larger cells with
50 or 60 amperes instead of thirty.

In regard to arc lighting machinery, the arc lighting dynamo should
not be used to charge the accumulators. They can be used, but they
require such constant attention as to make them impracticable. We can
only use shunt-wound dynamos conveniently for that purpose.

In regard to using two motors on a car, there are several advantages
in it. I use two motors on all my cars in Europe, and always have done
so from the beginning. One of the advantages is that in case of an
accident to one motor the other will bring the car home; secondly,
with two motors we can vary the speed without changing the E.M.F. of
the battery. If I want very much power, I put two motors in parallel,
getting four times the power that I do with one machine, and an
intermediate power of two motors.

There is another advantage of having two motors, and that is that we
can use two driving axles instead of one, and we can go up grades with
almost double the facility that way, because the adhesion would be
double. These are the main advantages arising from the use of two or
more motors.

Mr. Mailloux asked if I would give my experience in regard to the
mechanical transmission between the motor and the car axle. I have