The 29th of January, 1757, was a notable day in the life of Ben Franklin of Philadelphia, well known in the metropolis of America as printer and politician, and famous abroad as a scientist and Friend of the Human Race. It was on that day that the Assembly of Pennsylvania commissioned him as its agent to repair to London in support of its petition against the Proprietors of the Province, who were charged with having "obstinately persisted in manacling their deputies [the Governors of Pennsylvania] with instructions inconsistent not only with the privileges of the people, but with the service of the Crown." We may,.