Like the muscles of the foot, the fixers of the wrist may become
overworked and exhausted, as occasionally happens in men and women who
do not hold their pens correctly and write for long spells day after
day. The break-down which happens in them is called "writer's cramp,"
but it is a disaster of the same kind as that which overtakes the foot
when its arch collapses, and its utility as a lever is lost.
FOOTNOTES:
[Footnote 1: From _The Engines of the Human Body_, Chapters VI and VII.
J.B. Lippincott Company, Philadelphia, 1920; Williams and Norgate,
London, 1920.]
THE EXPOSITION OF A MACHINE
THE MERGENTHALER LINOTYPE[2]
_Philip T. Dodge_
The Mergenthaler Linotype machine appeared in crude form about 1886.
This machine differs widely from all others in that it is adapted to
produce the type-faces for each line properly justified on the edge of a
solid slug or linotype.
These slugs, automatically produced and assembled by the machine, are
used in the same manner as other type-forms, whether for direct printing
or for electrotyping, and are remelted after use.
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