_The Use of Manuscripts and Books Made Permanent Records_.--At first all records were made by pen, pencil, or stylus, and manuscripts were represented on papyrus paper or parchment, and could only be duplicated by copying. In Alexandria before the Christian era one could buy a copy of the manuscript of a great author, but it was at a high price. It finally became customary for monks, in their secluded retreats, to spend a good part of their lives in copying and preserving {129} the manuscript writings of great authors. But it was not until printing was invented that the world of letters rapidly moved forward. Probably about the sixth century A.D. the Chinese began to print a group of characters from blocks, and by the tenth century they were engaged in keeping their records in this way. Gutenberg, Faust, and others improved upon the Chinese method by a system of movable type. But what a wonderful change since the fourteenth century printing! Now, with modern type-machines, fine grades of paper made by improved machinery, and the use of immense steam presses, the making of an ordinary book is very little trouble. Looking back over the course of events incident to the development of the modern complex and flexible language we observe, first, the rude picture scrawled on horn or rock. This was followed by the representation of the sound of the name of the picture, which passed into the mere sound sign. Finally, the relation between the figure and the sound becomes so arbitrary that the child learns the a, b, c as pure signs representing sounds which, in combination, make words which stand for ideas.