story, and used to joke them about their ambition. They were very good-natured, and only answered me; 'Wait a little longer, Friend Right.' I had my own affairs to attend to; so, for years at a time, I forgot the coral-workers, and spent most of my life up Greenland way, for warm climates don't agree with my constitution. When I came back, after a long absence, I was astonished to see the tree grown into a large umbrella-shaped thing, rising above the water. Sea-weed had washed up and clung there; sea-birds had made nests there; land-birds and the winds had carried seeds there, which had sprung up; trunks of trees had been cast there by the sea; lizards, insects, and little animals came with the trees, and were the first inhabitants; and, behold! it was an island."
"What did you say then?" asked Freddy.
"I was angry, and didn't want to own that I was wrong; so I insisted that it wasn't a real island, without people on it. 'Wait a little longer,' answered the polypes; and went on, building broader and broader foundations. I flounced away in a rage, and didn't go back for a great while. I hoped something would happen to the coral builders and their island; but I was so curious that I couldn't keep away, and, on going back there, I found a settlement of fishermen, and the beginning of a thriving town. Now I should have been in a towering passion at this, if in my travels I hadn't discovered a race of little creatures as much smaller than polypes as a mouse is smaller than an elephant. I heard two learned men talking about diatoms, as they sailed to Labrador; and I listened. They said these people lived in both salt and fresh water, and were found in all parts of the world. They were a glassy shell, hold-
