Quick as thought, young Edison rushed to the track and saved the child at the risk of his own life.
The baby's father was very grateful and offered to teach Thomas telegraphy.
Of course, Thomas was very happy, and accepted the offer.
He came to Mt. Clemens every evening, after working hard all day.
He did so well that, in five months, he was given a position at Port Huron.
He earned six and one-quarter dollars a week.
He worked almost night and day, so that he might learn all he could about it.
His mother said that the world would hear from her boy some day.
Afterwards he worked in several places.
In Indianapolis, though not yet seventeen, he invented his first telegraph instrument.