Definition of "ultranatural"

He thought it quite possible that his brain in sleep had at last become so active, through the exhausting and depleting medical regime that he went through in Malines, that it actually was able to dictate its will to his body, and that everything might have happened to him as it did then and afterwards without any supernatural or ultranatural agency whatever—without a Martia!

1897, Maurier George Du, The Martian‎, page 384

Coleridge, the greatest though not the first great critic and apostle orinterpreter of Shakespeare, has noted "these daughters and these sisters" as the only characters in Shakespeare whose wickedness is ultranatural — something outside and beyond the presumable limits of human evil. It would be well for human nature if it were so; but is it?

1909, Algernon Charle Swinburne, Three Plays of Shakespeare‎, Harper & Brothers, page 8

The only approach to the superconscious, to the unreal, is through the real, the ultranatural, that is to say through nature and its normal, unforced, creative life.

1989, Konstantin Stanislavsky, Hermine I. Popper, Creating a Role, page 91