It was a presentiment that human thought, in changing its form, was about to change its mode of expression; that the dominant idea of each generation would no longer be written with the same matter, and in the same manner; that the book of stone, so solid and so durable, was about to make way for the book of paper, more solid and still more durable. In this connection the archdeacon’s vague formula had a second sense.

It meant, “Printing will kill architecture.”

In fact, from the origin of things down to the fifteenth century of the Christian era, inclusive, architecture is the great book of humanity, the principal expression of man in his different stages of development, either as a force or as an intelligence.

When the memory of the