which passes through the sash and through the key holes that causes the pivots to be gummy and gritty. The front pivot holes wear largest first. A few pennys' worth of oil will last many years. It is necessary to occasionally oil the pulleys on the top of the case which the cord passes over. If this is not done the hole becomes irregular, and a part of the power is lost to the clock. Common oil will answer for them. With regard to balance-wheel clocks, it is more difficult to explain the mode of repairing, to the inexperienced. With reference to oiling, use none but watch oil.