Which preposition to use with changeableness

of Occurrences 3%

The sad forest ringed it round with a green wall, feathered down to the ugly mud, on which, partly perhaps from its saltness, partly from the changeableness of the surface, no plant would grow, save a few herbs and creepers which love the brackish water.

as Occurrences 1%

There was in him almost as much changeableness as zeal for the cause he embraced.

Which preposition to use with  changeableness