given by the finger as nearly only as the harpsichord does that of the harp, it will be very valuable. I have lately examined a foot-bass newly invented here, by the celebrated Krumfoltz. It is precisely a piano-forte, about ten feet long, eighteen inches broad, and nine inches deep. It is of one octave only, from fa to fa. The part where the keys are, projects at the side in order to lengthen the levers of the keys. It is placed on the floor, and the harpsichord or other piano-forte is set over it, the foot acting in concert on that, while the fingers play on this. There are three unison chords to every note, of strong brass wire, and the lowest have wire wrapped on them as the lowest in the piano-forte. The chords give a fine, clear, deep tone, almost like the pipe of an organ. Have they connected you with our mint? My friend Monroe promised me he would take care for you in that, or perhaps the establishment of that at New York may have been incompatible with your residence in Philadelphia. A person here has invented a method of coining the French ecu of six livres, so as to strike both faces and the edge at one stroke, and makes a coin as beautiful as a medal. No country has ever yet produced such a coin. They are made cheaper too. As yet, he has only made a few to show the perfection of his manner. I am endeavoring to procure one to send to Congress as a model for their coinage. They will consider whether, on establishing a new mint, it will be worth while to buy his machines, if he will furnish them. A dislocation of my right wrist, which happened to me about a month after the date of my last letter to you, has disabled me from writing three months. I do it now in pain, and only in cases of necessity, or of strong inclination, having as yet no other use of my hand. I put under your cover a letter from my daughter to her friend. She joins me in respects to your good mother, to Mrs. Hopkinson and yourself, to whom I proffer assurances of the esteem with which I am, dear Sir, your sincere friend and servant. TO HIS EXCELLENCY DR. FRANKLIN. PARIS, December 23, 1786.