It was futile, incoherent; her tongue seemed to dry in her mouth. Besides, the abashed woman needs must pause before a silence that to her strained sense seemed rebuking. She glanced furtively up at the youth standing there. It troubled the mistress of Heartholm to realize that her protégé was staring gravely at her, as if she had proposed some guilty and shameful thing. At last Berber, with a boyish sigh, seemed to shake the whole matter off. He turned to his bulbs; half at random he caught up a pruning-knife, cutting vindictively into one of them. For the moment there was silence, then the young gardener called his mistress's attention to the severed root in his hand. "A winy-looking thing, isn't it? See those red fibers? Why shouldn't such roots, and nuts like those great, burnished horse-chestnuts there--yes, and cattails, and poke-berries, and skunk cabbages, give forth an entirely new outfit of fruits and vegetables?" Berber smiled his young ruminating smile; then, with inevitable courtesy, he seemed to remember that he had not answered her question. "I am not surprised that you and Mr. Strang thought such things about me. I wonder that you have not questioned me before--only you see _now_--I can't answer!" The boy gave her his slow, serious smile, reminding her. "You must remember that I am like a foreigner--only worse off, for foreigners pick up a few words for their most vital needs, and I have no words at all--for what--for what vital things I used to know--so that perhaps in time I shall come to forget that I ever knew anything different from--other persons' knowledge." Berber paused, regarding his mistress intently, as if wistfully trying to see what she made of all this. Then he continued: "One of our professors at college died, and the men of his class were gloomy; some even cried, others could not trust themselves to speak of him.... I noticed that they all called him 'poor' Landworth.... I could see that they felt something the way I do when I miss out on a chemical experiment, or spoil a valuable specimen--only more so--a great deal more." The boy knit his brows, puzzling it all out. "Well, it's queer. I liked that professor, too; he was very kind to me--but when I saw him dead I felt glad--glad! Why"--Berber looked at her searchingly--"I grew to be afraid some one would find out _how_ glad!" The young fellow, still anxiously searching her face, dropped his voice. "You are the only person I dare tell this to--for I understand the world--" She noted that he spoke as if "the world" were a kind of plant whose needs he had fathomed. "But after that," concluded Berber, speaking as if quite to himself--"after that I somehow came to see that I had been--well, educated _backward_." She moved impatiently; the youth, seeing the question in her face, answered the demand of its trembling eagerness, explaining: