"Yet you can see that a knowledge of numbers could be thus obtained?"

"Why, yes. Of course. But I never thought of it before."

"Remember that the race had reverted to its childhood during the Dark Ages," explained Mr. Cameron. "For years all its attention had been given to warfare, and learning and the arts which had been destroyed by constant strife and turmoil had to be built up again."

"But to have people learn arithmetic by means of playing cards!" mused Paul.

"Better that way than not at all. It helped the big result by gradually making them realize how little they knew, and making them want to know more, which was the necessary spur to learning. You will be interested also to know, since we are discussing playing cards, that the four suits are said to represent the four great social classes of society at that time. Hearts stood for the clergy; Spades (spada meaning a sword) for the nobility; Clubs for the peasantry; and Diamonds for the more prosperous citizens or burghers."

"That is interesting, isn't it?"

"Yes, I think so."

"And the images?"

"Oh, the image-prints were small religious pictures done in color," answered his father, "and I fear they were often valued far more for their brilliant hues than for their religious significance. They represented all sorts of subjects, being taken largely from incidents in the lives of the saints. You know that at that time in many countries, especially in Italy, religious dramas were presented—plays such as Everyman and Saint George and the Dragon. Hence such scenes were constantly before the people, and they were very familiar with them. The small image-prints served to perpetuate to a great extent things which they liked and knew; and the picture books, which gave not only these scenes in other form, but also reproduced stories from the Bible, did the same. No text was necessary. The picture told the tale to a people who could not read, just as the stained-glass windows and mosaics in the churches did. Everywhere the feeble literature of the period took the form either of verbal minstrelsy, drama, or pictured representations. You will recall how most of the early races first wrote in pictures instead of letters. There were hieroglyphics in Egypt; 'speaking stories' in Assyria; and picture-writing in Turkey, China, and Japan. The picture book of the time was merely an attempt to put into simple outline, by means of woodcuts, the religious drama, or dumb shows of the day. The city of Florence did much for this form of work, its rappresentazioni being printed as early as 1485. Albrecht Dürer of Germany was one of the later and most skilful woodcut artists. What the ballad was to literature the woodcut was to art—simple, direct, appealing."

The man paused.