"They do, too!" answered the little boy.
"You are thinking of phosphorus, Freddie," explained Mr. Bobbsey. "That is different, and it is poisonous." Then the drinks were ordered and quickly served.
"And now I want to go to see the big fish!" said Freddie, sipping the last drops of his Sweet drink. "Are there any animals in the 'quarium. Daddy?"
"Well, there aren't any lions or tigers," answered Mr. Bobbsey. "We'll go to see them later in Bronx Park. But, of course, fish are animals. It won't take me long to run into City Hall and see my friend. Then we'll go to the Aquarium."
Left on the top steps of the City Hall building, this time the Bobbsey twins were found safely there when their father came out, and a little later they were on their way to Battery Park in a Broadway street car, that ran on the ground.
"We've ridden under the ground in the subway, over the ground in the elevated and now we're riding on the ground," said Nan. "New York is a funny place!"
