Another time a beautiful shell was given me, and with a child's surprise and delight I learned how a tiny mollusk had built the lustrous coil for his dwelling place, and how on still nights, when there is no breeze stirring the waves, the Nautilus sails on the blue waters of the Indian Ocean in his "ship of pearl." After I had learned a great many interesting things about the life and habits of the children of the sea--how in the midst of dashing waves the little polyps build the beautiful coral isles of the Pacific, and the foraminifera have made the chalk-hills of many a land--my teacher read me "The Chambered Nautilus," and showed me that the shell-building process of the mollusks is symbolical of the development of the mind. Just as the wonder-working mantle of the Nautilus changes the material it absorbs from the water and makes it a part of itself, so the bits of knowledge one gathers undergo a similar change and become pearls of thought. Again, it was the growth of a plant that furnished the text for a lesson. We bought a lily and set it in a sunny window. Very soon the green, pointed buds showed signs of opening. The slender, fingerlike leaves on the outside opened slowly, reluctant, I thought, to reveal the loveliness they hid; once having made a start, however, the opening process went on rapidly, but in order and systematically. There was always one bud larger and more beautiful than the rest, which pushed her outer covering back with more pomp, as if the beauty in soft, silky robes knew that she was the lily-queen by right divine, while her more timid sisters doffed their green hoods shyly, until the whole plant was one nodding bough of loveliness and fragrance. Once there were eleven tadpoles in a glass globe set in a window full of plants. I remember the eagerness with which I made discoveries about them. It was great fun to plunge my hand into the bowl and feel the tadpoles frisk about, and to let them slip and slide between my fingers. One day a more ambitious fellow leaped beyond the edge of the bowl and fell on the floor, where I found him to all appearance more dead than alive. The only sign of life was a slight wriggling of his tail. But no sooner had he returned to his element than he darted to the bottom, swimming round and round in joyous activity. He had made his leap, he had seen the great world, and was content to stay in his pretty glass house under the big fuchsia tree until he attained the dignity of froghood. Then he went to live in the leafy pool at the end of the garden, where he made the summer nights musical with his quaint love-song.