"Ideas will string themselves like Ropes of Onions," Franklin once declared. This was certainly true of the plans which his public spirit devised for the improvement of Philadelphia. The next thing to which his hand was turned was the creation of an academy. In 1743, he drew up a proposal for one, but, being disappointed in his efforts to persuade the Reverend Mr. Peters to act as its head, he let the project lie dormant for a time. While it remained so, remembering Poor Richard's maxim that leisure is time for doing something useful, he passed to the organization of a system of military defenses for the Province and the founding of a Philosophical Society. Of the former task we shall speak hereafter. The latter was initiated by a circular letter from him to his various learned friends in the Northern Colonies, proposing the formation of a society for the purpose of promoting a commerce of speculation, discovery and experimentation between its members with regard to scientific interests of every sort. A correspondence with the Royal Society of London and the Dublin Society and "all philosophical experiments that let light into the nature of things, tend to increase the power of man over matter, and multiply the conveniences or pleasures of life" were among the things held out in the proposal. Colonial America was far more favorable to practical activity than to philosophical investigation, but the society, nevertheless, performed an office of no little usefulness. When Franklin built a new wing to his residence in Philadelphia, after his return from Paris, he provided a large apartment on the first floor of this addition for the accommodation of the American Philosophical Society into which this Society had been merged. When he made his will, he was the President of the new society, and he bequeathed to it his _History of the Academy of Sciences_, in sixty or seventy volumes quarto; and, when he died, one of its members, Dr. William Smith, pronounced an eulogy upon his character and services. The wing of his house, in which space was set apart for the society, was itself, in its precautions against fire, one worthy of a vigilant and enlightened philosopher. None of the woodwork of one room, for instance, communicated with the woodwork of any other. Franklin thought, however, that the staircases should have been of stone, and the floors tiled as in Paris; and that the roof should have been either tiled or slated.[11]