While attending Dr.Graham's class he was brought into frequent contact with the assistant to the Professor, Mr.James Young.

Originally bred to a mechanical employment, this young man had attended the evening course of Dr.Graham, and having attracted his attention, and done various pieces of work for him, he became his assistant.

The students used to gather round him, and several met in his room, where there was a bench, a turning-lathe, and other conveniences for mechanical work.
Livingstone took an interest in the turning-lathe, and increased his knowledge of tools--a knowledge which proved of the highest service to him when--as he used to say all missionaries should be ready to do--he had to become a Jack-of-all-trades in Africa.
Livingstone was not the only man of mark who frequented that room, and got lessons from Mr.Young "how to use his hands." The Right Hon.

Lyon Playfair, who has had so distinguished a scientific career, was another of its habitues.

A galvanic battery constructed by two young men on a new principle, under Mr.Young's instructions, became an object of great attraction, and among those who came to see it and its effects were two sons of the Professor of Mathematics in the University.