matrices

His arm was against the chart case, his fingers near the sealed tubes that held the jump matrices.

The metal instantly solidifies, forming a slug (p. 063)having on its edge raised characters formed by the matrices.

The gangues (mineral matrices) of native silver are so numerous, that it may be said to occur in all kinds of rocks.

Each channel has at the lower end an escapement B to release the matrices one at a time.

This done, the matrices are returned to the magazine and distributed, to be again composed in new relations for succeeding lines.