gray-bearded investigator, who only becomes youthful upon diabolical
intervention, and would stay senile without it. In the Edison laboratory
no such weird transformation has been necessary, for the philosopher
had youth, fiery energy, and a grimly practical determination that would
submit to no denial of the goal of something of real benefit to mankind.
Edison and Faust are indeed the extremes of philosophic thought and
accomplishment.

The home at Port Huron thus saw the first Edison laboratory. The boy
began experimenting when he was about ten or eleven years of age. He got
a copy of Parker's School Philosophy, an elementary book on physics, and
about every experiment in it he tried. Young Alva, or "Al," as he was
called, thus early displayed his great passion for chemistry, and in
the cellar of the house he collected no fewer than two hundred bottles,
gleaned in baskets from all parts of the town. These were arranged
carefully on shelves and all labelled "Poison," so that no one else
would handle or disturb them. They contained the chemicals with which
he was constantly experimenting. To others this diversion was both
mysterious and meaningless, but he had soon become familiar with all
the chemicals obtainable at the local drug stores, and had tested to
his satisfaction many of the statements encountered in his scientific
reading. Edison has said that sometimes he has wondered how it was
he did not become an analytical chemist instead of concentrating on
electricity, for which he had at first no great inclination.

Deprived of the use of a large part of her cellar, tiring of the "mess"
always to be found there, and somewhat fearful of results, his mother
once told the boy to clear everything out and restore order. The thought
of losing all his possessions was the cause of so much ardent distress
that his mother relented, but insisted that he must get a lock and key,