When Mrs. Casaubon was announced he started up as from an electric shock, and felt a tingling at his fingerends. Any one observing him would have seen a change in his complexion, in the adjustment of his facial muscles, in the vividness of his glance, which might have made them imagine that every molecule in his body had passed the message of a magic touch. And so it had. For effective magic is transcendent nature; and who shall measure the subtlety of those touches which convey the quality of soul as well as body, and make a man's passion for one woman differ from his passion for another as joy in the morning light over valley and river and white mountain-top differs from joy among Chinese lanterns and glass panels? Will, too, was made of very impressible stuff. The bow of a violin drawn near him cleverly, would at one stroke change the aspect of the world for him, and his point of view shifted- as easily as his mood. Dorothea's entrance was the freshness of morning.