The cuneiform (wedge-shaped) or arrow-headed character is a system of writing peculiar to the countries between the Euphrates and the Persian frontier on the East. Various combinations of a figure shaped like a wedge, together with one produced by the union of two wedges, constitute the system of writing employed by the ancient Assyrians, Babylonians, Medes, and the Achæmenian kings of Persia. The character seems to have been as extensively employed in this portion of the world, as the Roman letters now are in Europe. Particular arrangements or combinations of these characters apparently belonged to different nations, speaking different languages. When and where this system of writing originated is not known. Professor Westergaard[76] thinks that "Babylon was its cradle, whence it spread in two branches, eastward to Susiana, and northward to the Assyrian empire, from whence it passed into Media, and lastly into ancient Persia, where it was much improved and brought to its greatest perfection." Major Rawlinson makes of the arrow-headed writing three great classes or divisions, the _Babylonian_, _Median_ and _Persian_. The first of these he thinks is unquestionably the oldest. "It is found upon the bricks excavated from the foundations of all the buildings in Mesopotamia, Babylonia, and Chaldea, that possess the highest and most authentic claims to antiquity;" and he thinks it "not extravagant therefore to assign its invention to the primitive race which settled in the plain of Shinar."[77] In the recent excavations made by M. Botta and Mr. Layard, on or near the site of ancient Nineveh, numerous inscriptions in this form of the arrow-head character were found. It also occurs in detached inscriptions from the Mediterranean to the Persian mountains. A comparison of the various inscriptions in the Babylonian class of writing has led Major Rawlinson to believe that it embraces five distinct varieties, which he calls the Primitive Babylonian, the Achæmenian Babylonian, the Medo-Assyrian, the Assyrian, and the Elymæan.[78] The peculiarities of these several varieties, with the countries in which they are found, are pointed out in the second chapter of our author's learned Memoir on cuneiform writing. The Median and Persian classes are peculiar to the trilingual tablets of Persia, and are better known than the first class or Babylonian. Mr. Westergaard[79] divides the cuneiform writing into five classes: the _Assyrian_; the _Old Babylonian_; and the three kinds on the trilingual tablets of Persia, which embrace the _Median_ and _Persian_ varieties, and the one called by Rawlinson the _Achæmenian Babylonian_.