Two approaches to reheating c massecuite have been taken, direct resistance electric heating and water heating in a heat exchanger. Electric reheating has been unsuccessful because of the difficulty in obtaining uniform heating. The process of electric heating is essentially unstable and not self – regulating the resistance of the massecuite reduces as the temperature rises; the result is that if localized high temperature regions occur, more current flows through the hotter massecuite and preferentially heats up the hot rather than the cool massecuite. Water heating is less troublesome and is preferred.