Sorry Paul, "dooreen" was definitely wrong, a typing error.

It's "dooring", definitely.

I appreciate your attention to detail.

The 1904 book includes on the relevant page a nice illustration by Joseph Campbell's brother, John Patrick Campbell (1883-1962), a talented artist. If you wish, and can get your email address to me, I can send you a copy. Then you will be able to see with your own eyes that it's definitely "dooring" !