PHILOSOPHY. 83 “J don’t see why we can’t see both, mother,” said Lucy. “Why, you see,” said Robert, “ it dazzles our eyes, — the light of the sun does, — and we can’t see so well.” “I am sure I can see better in the day than in the night,” said Lucy. That's a mistake,” said her mother. “O mother!” said Lucy. “In one sense you can; that is, you can see more things, because there is so much more light ; but your eye is not so sensitive.” ‘What do you mean by sensitive?” asked Lucy. “ Why, let me see,’ said her mother; “how shall I explain it to you?” Here she hesitated, and appeared to be thinking. Lucy and Robert sat still, and did not interrupt her. As for Eben, he began to be tired of this philosophical discussion, and so he got off from the log, and began to punch a stick down into a hole under the root of a tree. He thought that it was a squirrel’s hole, and he wanted to make the squirrel come out. “Suppose,” said Lucy’s mother, after a mo- ment’s pause, “that I had a small box, tight all around, excepting at one end, where there was a