Anima

[W]e cannot chuse but admire the exceeding vividness of the governing faculty or Anima of the Insect, which is able to dispose and regulate so the motive faculties, as to cause every peculiar organ, not onely to move or act so quick, but to do it also so regularly.

In the Jungian model of the psyche, the male has an internalized female counterpart, the anima; while the female has an internalized masculine counterpart, the animus.

Dorothy is bodiless and sexless in Tintern Abbey because she is Wordsworth's Jungian anima, an internal aspect of self momentarily projected.

The projection-making factor is the anima, or rather the unconscious as represented by the anima.