She looked at him with eyes unfathomably tired and sad, eyes of that gentle appeal that went straight to the depths of his masculine heart.
"The Locusts' Years"
Mary Helen Fee
Notwithstanding these facts, I cannot persuade myself that the many very small, isolated, and sickle-formed reefs and others, long, nearly straight, and very narrow, with the water unfathomably deep close round them, could possibly have been formed by corals merely coating banks of sediment, or the abraded surfaces of irregularly shaped islands.
"Coral-Reefs"
Darwin, Charles
But after he had given up all hope of her, he did not hesitate to draw her to him in other ways; and there was that which drew her unfathomably to him-all the more securely since in her mind there was no thought that the bond between them would ever involve the possibility of love and marriage.
"The Mettle of the Pasture"
James Lane Allen