“What is it?” Will asked, and was told that it was an extract from a mountain plant related to valerian. “It helps people to stop worrying,” the little nurse explained, “without making them sleepy. We give it to convalescents. It’s useful, too, in mental cases.” “Which am I! Mental or convalescent?” “Both,” she answered without hesitation. Will laughed aloud. “That’s what comes of fishing for compliments.”