credit to the extent of five thousand pounds for the purpose of supporting that of a London friend. His correspondence nowhere indicates any degree of pecuniary caution in excess of the proper demands of good sense. On the contrary, it furnishes repeated testimony to his promptitude in honoring the solicitations of private distress or subscribing to public purposes. Conspicuously unselfish was he when the appeal was to his public spirit or to his interest in the general welfare of mankind. Among his innumerable benefactions was a gift of one thousand pounds to Franklin College, Pennsylvania. When he invented his open stove for the better warming of rooms, he gave the model to his friend, Robert Grace, who found, Franklin tells us in the _Autobiography_, the casting of the plates for the stove at his furnace near Philadelphia a profitable thing. So far from begrudging this profit to his friend, he wrote his interesting _Account of the New-invented Pennsylvanian Fireplaces_ to promote the public demand for the invention. A London ironmonger made some small changes in the stove, which were worse than of no value to it, and reaped, Franklin was told, a little fortune by it. "And this," he says in the _Autobiography_, "is not the only instance of patents taken out for my inventions by others, tho' not always with the same success, which I never contested, as having no desire of profiting by patents myself, and hating disputes." When he was actually engaged in the business of printing, a similar motive, so far as public spirit went, led him to offer to print a treatise by Cadwallader Colden on the _Cause of Gravitation_ at his own expense and risk. If he could be the means of communicating anything valuable to the world, he wrote to Colden, he did not always think of gaining nor even of saving by his business.