Which preposition to use with bulgings

of Occurrences 3%

It is interesting, too, to note that by this outward cant of the wall below, and the bulging of the coronary margin above it, the contraction (a, a) is heightened in effect, and caused to appear greater than really it is.

into Occurrences 1%

With our bulk of the North American continent bulging into both the great oceans, it was foreordained since the beginning when God created the earth, that we, the possessors of this imperial American zone, should be a great Asiatic Power.

Which preposition to use with  bulgings