normous amount of labour, have at length been translated. Whole libraries of these brick-books have been discovered, and as the reading and [17]translating goes on, we obtain a knowledge of the history, laws, customs, and daily life of this ancient people almost equal to that we now possess of the ancient Indians and Egyptians.

For our present purpose, however, Egyptian civilisation is the most important, because it presents us with the most definite proof of the attainment of a high degree of what is specially scientific attainment at the very dawn of historical knowledge. This is well exhibited by that most wonderful work of constructive art—the Great Pyramid of Gizeh—which, though not quite the earliest, is the largest and most remarkable of about seventy pyramids in various parts of Egypt, and has been more thoroughly explored and studied, both as to its proportions, construction and uses, than any of the others.

This pyramid is known historically to have been built by the order of King Cheops (or Khufu), and the date of its design and erection can be pretty accurately fixed as about 3700 B.C., or nearly 2,000 years earlier than that of the civilisation depicted in the Indian and Greek epics. The internal structure of this pyramid is its most interesting feature, because it shows clearly [18]that it was designed to be not only the tomb of the king who built it, but also a true astronomical observatory during his life. This has been denied by some modern historians. In Harmsworth's History of the World (p. 2034) it is said: "For the pyramids are nothing but tombs. They have no astronomical meaning or intention whatever." And then, after referring to the ideas of Piazzi Smyth and others as "vain imaginings," it