The Aquarium, as those of you know who have seen it, is in the round, brown stone building, on a point of land almost the very end of the island of Manhattan. It is where the North and East rivers come together to form New York Bay, and, years ago, this building was where the immigrants, or people who came to the United States from other countries, were kept for a while until they could be sent out West, or down South, or wherever they wanted to go.
Now it is a place where many fish, big, little, ugly and beautiful, are shown in tanks of water so the boys and girls can see what strange things are in the ocean, rivers and lakes of this world.
Led by Mr. Bobbsey, Bert and Nan, with Flossie and Freddie trailing on behind, walked around the big building, looking in the glass tanks wherein swam the fish.
"What's over there?" asked Freddie, pointing to where a crowd of people were standing near some pools in the middle of the floor.
"Oh, different big fish—a sea lion, alligators and turtles," said Mr. Bobbsey.
