I shall vanish instantly, if you waste another moment's time because I am here." "But I want to talk," he protested.

"I have been working hard since noon." "Of course you have," she retorted.

"But presently the light will change again, and you won't be able to do any more to-day; so you must keep busy while you can." "And you won't vanish--if I go on with my work ?" he asked doubtfully.

She was smiling at him with such a mischievous air, that he feared, if he turned away, she would disappear.
She laughed aloud; "Not if you work," she said.

"But if you stop--I'm gone." As she spoke, she went toward his easel, and, resting her fly rod carefully against the trunk of a near-by alder, slipped the creel from her shoulder, placing the basket on the ground with her hat.