The land of Babylonia has been happily compared with the southern half of our state of Louisiana, which it resembles in marshy districts. Again it might be likened to the Egyptian Delta, being of course, larger,--something like Denmark in point of area. Possessing no rocks or mountains, the country seemed at first to be devoid of building material. It has been supposed that its primitive people first sheltered themselves in huts built of reeds which grew abundantly along the river banks. After awhile it was discovered that clay mud furnished a fair material when shaped into bricks and dried in the sun. A more enduring brick was later made by baking the brick in ovens. This oven-baked brick as well as the sun-dried brick constituted the great building material of Babylonia for all subsequent time. The district north of the alluvial line, enclosed by rivers and mountains, in time became the kingdom of Assyria. This region differed greatly from the southern land. It was made up of low ranges on the north, rolled gently to the south, and supplied excellent pasturage. Stone and material suitable to building purposes were available, but the people, accustomed to the clay bricks of their old home in Babylonia, never made use of the more substantial building stuff. Indeed the Assyrians were not at all of an inventive mind, as another illustration will plainly show. In Babylonia, because the ground was low and level, the people were obliged to construct artificial heights for building sites, thus to escape marshy exhalations and troublesome insects. They erected huge piles of sun-dried brick and crowned these with their palaces and temples. Now the Assyrians were in the beginning colonists who had gone out of the mother state to find less populated regions farther north. There were hills and elevations in abundance in Assyria, but holding to the custom they had so long followed, they continued to construct great foundations of bricks for their buildings. It is curious indeed to find them, throughout their history, expending time, labor and resources to produce what nature had already provided. Assyria was somewhat larger than Babylonia, and has been compared to the state of Illinois in size. While the northern mountains and the Gulf afforded definite boundaries, the limits to the east and west were never certain and both Babylonians and Assyrians pushed out in each direction as they became more powerful, contracting again if their strength weakened. On the west a desert separated them from the Mediterranean, and while various tribes held the country east of the Tigris in early times, the Medes later conquered the region east of Assyria, and Persia reached away to the southeast.