“He’s delivering his milk,” said the professor. “He finds out how much a customer wants and then milks one of his cows to that extent.”

“Then the milk ought to be fresh and rich,” said Mark, who had found the ride surprisingly comfortable despite the awkward appearance of his steed.

“It is fresh enough, but not particularly rich, for the cows roam where they please and rarely get enough to eat.”

“I should think a fellow would get all mixed up in a city where the houses are so much alike,” said Sam.

“You won’t get mixed after you get the run of the place, Winthrop. Remember that all the streets start from the cathedral at the Plaza Bolivar. The four streets there are called Avenue North, East, South, and West, and then follow Second Street North, Second Street East, and so on.”

A few minutes more of riding brought them to the hotel at which they were to remain during their stop in Caracas. The professor went inside and announced their arrival and then the boys and he assisted Mark to alight. They passed through a large iron gateway into a beautiful square filled with flowers, where a fountain was playing. Then a servant came to lead them to their rooms, which were all on the ground floor, and in a few minutes more they could truly say they were at home in Caracas.

CHAPTER XI
THE PROFESSOR MEETS AN OLD FRIEND

“How does the ankle feel?” asked Frank, on the morning following the arrival at the hotel.

“Somewhat sore, but I can stand on it,” answered Mark. “I guess it will be all right again in a day or two;” and it was, although Mark was careful of the member for some time longer.

Under the guidance of the professor the boys made several tours of the city. They first visited the Capitol building, but a short distance from their hotel. The Capitol is but one story high, but it occupies an entire square, and is by far the finest building in Venezuela. In the center is a large court, where a fountain plays constantly and where grow the most beautiful of tropical flowers. Here are a number of rich marble statues.