Which preposition to use with corrugations

in Occurrences 1%

Otherwise it might be true that the restless and inquisitive climate of the Atlantic coast, which wears the ordinary Yankee to leanness, and "establishes a raw" upon the nervous system, does soften to acuteness, mobility, and racy corrugation in the breast of its natural ally, the Doctor.

of Occurrences 1%

I had already torn off my mittens, and as I slid at last over a rough place in the ice I succeeded in getting my finger-nails into the little corrugations of the surface and in stopping my perilous drift; but I hardly dared breathe lest I should lose my hold.

on Occurrences 1%

" In another curious passage he says that all things which are natural and congruent with the causes which produce them have a certain beauty and attractiveness of their own; for instance, the splittings and corrugations on the surface of bread when it has been baked.

Which preposition to use with  corrugations