Which preposition to use with slidings

of Occurrences 7%

The natural effect is greatly aided by the sliding of the finger along the note, especially in the case of the lowing of cattle; but there are other exclamations that are readily reduced to music.

over Occurrences 1%

And I stayed very quiet a time, and afterward I went upward again of the Gorge, and did use a new caution to my way, and saw that the Diskos was free upon my hip; for even thus I did carry the weapon, being that I must use both hands to my way, and to save me in my stumblings and slidings over the slippery rocks.

Which preposition to use with  slidings