“How to choose and find a true string, which is the most curious piece of skill in stringing, is both a pretty curiosity to do, and also necessary. First, draw out a length, or more; then take the end, and measure the length it must be of, within an inch or two, (for it will stretch so much at least in the winding up,) and hold that length in both hands, extended to reasonable stiffness: then, with one of your fingers strike it; giving it so much liberty in slackness as you may see it vibrate, or open itself. If it be true, it will appear to the eye, just as if they were two strings; but if it shows more than two, it is false, and will sound unpleasantly upon your instrument, nor will it ever be well in tune, either stopt or open, but snarl.” Sir John Hawkins observes that this direction is given by Adrian Le Roy in his instructions for the lute, and is adopted both by Mersennus and Kircher. Indeed this experiment is the only known test of a true string, and for that reason is practised by such as are curious at this day. In his directions for playing, Master Mace says, “take notice that you strike not your strings with your nails, as some do, who maintain it the best way of play; but I do not; and for this reason; because the nail cannot draw so sweet a sound from the lute as the nibble end of the flesh can do. I confess in a concert it might do well enough, where the mellowness, (which is the most excellent satisfaction from a lute) is lost in the crowd; but alone, I could never receive so good content from the nail as from the flesh.” Mace considered it to be absolutely necessary that all persons who kept lutes should know how to repair them; for he had known a lute “sent fifty or sixty miles to be mended of a very small mischance, (scarce worth twelve pence for the mending) which besides the trouble and cost of carriage, had been broken all to pieces in the return, and so farewell lute and all the cost.” One of the necessary tools for this work is “a little working knife, such as are most commonly made of pieces of broken good blades, fastened into a pretty thick haft of wood or bone, leaving the blade out about two or three inches;” “grind it down upon the back,” he says, “to a sharp point, and set to a good edge; it will serve you for many good uses, either in cutting, carving, making pins, &c.”