An important adjunct of the palace was the temple, a copy of the tower- temples of the Chaldæans. Its position is marked at present by a lofty conical mound rising amidst and overlooking the palace ruins. Upon the decay of the Assyrian palaces, the material forming the upper part of the thick walls completely buried and protected all the lower portion of the structure. In this way their sculptures and inscriptions have been preserved through so many centuries, till brought to light by the recent excavations of French and English antiquarians. THE ROYAL LIBRARY AT NINEVEH.--Within the palace of Asshur-bani-pal at Nineveh, Layard discovered what is known as the Royal Library. There were two chambers, the floors of which were heaped with books, like the Chaldæan tablets already described, The number of books in the collection has been estimated at ten thousand. The writing upon some of the tablets is so minute that it cannot be read without the aid of a magnifying glass. We learn from the inscriptions that a librarian had charge of the collection. Catalogues of the books have been found, made out on clay tablets. The library was open to the public, for an inscription says, "I [Asshur-bani-pal] wrote upon the tablets; I placed them in my palace for the instruction of my people." Asshur-bani-pal, as we have already learned, was the Augustus of Assyria. It was under his patronage and direction that most of the books were prepared and placed in the Ninevite collection. The greater part of these were copies of older Chaldæan tablets; for the literature of the Assyrians, as well as their arts and sciences, was borrowed almost in a body from the Chaldæans. All the old libraries of the low country were ransacked, and copies of their tablets made for the Royal Library at Nineveh. Rare treasures were secured from the libraries founded or enlarged by Sargon of Agade (see p. 42). In this way was preserved the most valuable portion of the early Chaldæan literature, which would otherwise have been lost to the world. The tablets embrace a great variety of subjects; the larger part, however, are lexicons and treatises on grammar, and various other works intended as text-books for scholars. Perhaps the most curious of the tablets yet found are notes issued by the government, and made redeemable in gold and silver on presentation at the king's treasury. From one part of the library, which seems to have been the archives proper, were taken copies of treaties, reports of officers of the government, deeds, wills, mortgages, and contracts. One tablet, known as "the Will of Sennacherib," conveys to certain priests some personal property to be held in trust for one of his sons. This is the oldest will in existence. CHAPTER V. BABYLONIA.