To leave the soil of Italy is usually, in the case of Mr. Marion Crawford, to fall to a lower level than that which he has attained in his Roman romances. "Marion Darche" is no exception to the rule. It is a story of New York life; clever, brilliant even, but by no means satisfying. The heroine has made a mistake in choosing her husband. She might have had Harry Brett, the straightforward, true-hearted gentleman; and she has married instead John Darche, the selfish, cold-blooded, scheming speculator.