In the eighth and ninth centuries a mode of writing, which had been long before practised by notaries and by the secretaries of public persons, was adopted by the transcribers of books. This was a kind of running-hand, those who invented, or who most used it, being called tachygraphoi--swift writers. To adapt the Greek letters to the purpose of public business and common life, the square forms had been changed for curves, and uprights for slopes: and while a radical resemblance to the primitive character was preserved, facility and freedom were obtained. The uncial character was not, however, altogether abandoned by the copyists; but modifications of it were introduced with a view to obtain greater facility: for the unconnected and upright squares formerly used, seemed still more operose in execution after the running-hand had been adopted. The copyists of the eighth century introduced the practice of commencing books or chapters with a letter of large size, which they usually distinguished by grotesque decorations, somewhat in the manner seen in the printed books of the sixteenth century. Those who gained their living by copying books found so great an advantage in the adoption of the swift, or tachygraphic character, that they presently sought to improve it by every device that might favour the uninterrupted movement of the pen; not content with joining the letters of each word, they combined them in forms that often bore little or no resemblance to the component characters. The books of the tenth and following centuries abound with these contractions, abbreviations, and symbols. Many entire words of common occurrence were indicated by single turns of the pen. A great part of these contractions were adopted by the first printers, and many of them continued in use until a very recent date.