The process lasted long enough for uneasiness to turn to apprehension; but when at length a slip of paper was handed him, and he read on it: "Care of Mrs. Norma Hatch, Emporium Hotel," his apprehension passed into an incredulous stare, and this into the gesture of disgust with which he tore the paper in two, and turned to walk quickly homeward.
As she led the way westward past a long line of areas which, through the distortion of their paintless rails, revealed with increasing candour the DISJECTA MEMBRA of bygone dinners, Lily felt that Rosedale was taking contemptuous note of the neighbourhood; and before the doorstep at which she finally paused he looked up with an air of incredulous disgust.
There are no more uses of "incredulous" in the book.
Show samples from other sources
I find it incredulous that you believe she is sincere.