tractate on the Egyptian Mysteries (Google Books ⧉, Amazon ⧉, Bookshop ⧉)

Middlemarch

I have had the gratification of meeting my former acquaintance, Dr. Spanning, to-day, and of being praised by one who is himself a worthy recipient of praise. He spoke very handsomely of my late tractate on the Egyptian Mysteries,—using, in fact, terms which it would not become me to repeat.