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Rh that the wood-cut is so small, and that Amman's engraving is so coarse. There are some indications that, in its more important features, the mould of Amman was like that of Moxon. The little opening in the side of the mould which rests on the shelf may have been an opening for the insertion of matrices. That metal matrices were used is dimly shown by the three little bars resting on the top of a small nest of drawers, which has the appearance of a chest for punches and matrices. The pyramidal box was not only the nest of the mould, but served also as a support for the matrix. The sitting position of the caster permitted him to give the box a throw or jerk; with his right hand at liberty, he could pull out the mould and dislodge the type in the usual manner.

There are other features in Amman's wood-cut requiring notice. Upon the lower shelf are two crucibles, which were put in use, probably, when making the alloy of type-metal. The use of the sieves is not apparent; they may have been needed to sift the sand for the sand moulds, in which bars of type-metal were made, and in which large initial types were cast. The crucibles, the furnace, the mould, the position of the type-caster, and the single types with jets attached, are enough to prove that types were cast, one by one, by the process subsequently described by Moxon. It is plain that the elementary principles of type-founding were as clearly understood in 1564 as they are at this day.

The most obscure feature in this wood- cut is the matrix. The three little bits resting on the chest of drawers are too rudely cut to enable us to decide positively that they are matrices. We infer that they are from their surroundings and from the apparent necessity for such implements; but it would be more satisfactory to know, and not infer, that the early type-founders used matrices of hard metal.

There are no engravings of type-founding of earlier date than this cut of Amman's, but we have some evidences which point to a very early use of moulds of hard metal. We find in many of the books of the sixteenth and fifteenth centuries