Not P but Moby-Dick (105)

[Mike Jing]

>From Chapter 133:

Through and through; through every plank and each rib, it thrilled for an
instant, the whale obliquely lying on his back, in the manner of a biting
shark, slowly and feelingly taking its bows full within his mouth, so that
the long, narrow, scrolled lower jaw curled high up into the open air, and
one of the teeth caught in a row-lock.

What does "feelingly" mean here?