<P> There is no very definite statement as to the material which was in most common use for the purposes of writing at the start of the early writing systems . In all ages it has been customary to engrave on stone or metal, or other durable material, with the view of securing the permanency of the record; and accordingly, in the very commencement of the national history of Israel, it is read of the two tables of the law written in stone, and of a subsequent writing of the law on stone . In the latter case there is this peculiarity, that plaster (sic, lime or gypsum) was used along with stone, a combination of materials which is illustrated by comparison of the practice of the Egyptian engravers, who, having first carefully smoothed the stone, filled up the faulty places with gypsum or cement, in order to obtain a perfectly uniform surface on which to execute their engravings . Metals, such as stamped coins, are mentioned as a material of writing; they include lead, brass, and gold . To the engraving of gems there is reference also, such as with seals or signets . </P> <P> The common materials of writing were the tablet and the roll, the former probably having a Chaldean origin, the latter an Egyptian . The tablets of the Chaldeans are among the most remarkable of their remains . There are small pieces of clay, somewhat rudely shaped into a form resembling a pillow, and thickly inscribed with cuneiform characters . Similar use has been seen in hollow cylinders, or prisms of six or eight sides, formed of fine terra cotta, sometimes glazed, on which the characters were traced with a small stylus, in some specimens so minutely as to be capable of decipherment only with the aid of a magnifying - glass . </P> <P> In Egypt the principal writing material was of quite a different sort . Wooden tablets are found pictured on the monuments; but the material which was in common use, even from very ancient times, was the papyrus . This reed, found chiefly in Lower Egypt, had various economic means for writing, the pith was taken out, and divided by a pointed instrument into the thin pieces of which it is composed; it was then flattened by pressure, and the strips glued together, other strips being placed at right angles to them, so that a roll of any length might be manufactured . Writing seems to have become more widespread with the invention of papyrus in Egypt . That this material was in use in Egypt from a very early period is evidenced by still existing papyrus of the earliest Theban dynasties . As the papyrus, being in great demand, and exported to all parts of the world, became very costly, other materials were often used instead of it, among which is mentioned leather, a few leather mills of an early period having been found in the tombs . Parchment, using sheepskins left after the wool was removed for cloth, was sometimes cheaper than papyrus, which had to be imported outside Egypt . With the invention of wood - pulp paper, the cost of writing material began a steady decline . </P>

Who developed the first paper for the human beings