Which preposition to use with efflux

of Occurrences 14%

The body of him who dies, as we say, 'by efflux of time' at the age of fifty is as perfect as it was at five-and twenty.

from Occurrences 1%

The afflux of money to Birmingham, and its efflux from London, would render it cheaper to make some articles in London for Birmingham consumption; and to make others in London for home consumption, which were formerly brought from Birmingham.

Which preposition to use with  efflux