Provided that 0.1, the mass flux can readily be provided by general infall of gas from the body of the surrounding galaxy: ordinary stellar mass loss processes yield ~ 10-11 M yr-1 per solar mass at the present epoch (and more in a young galaxy); and this material would accumulate in the center, unless it were expelled by a supernova-driven or intergalactic wind. Recent evidence for large amounts of gas in some elliptical galaxies (e.g., NGC 4278) suggest that this possibility is not restricted to spirals [14, 15].