122
SEX IN INDUSTRY.
required by the telegraph instrument. The evidence of the direct influence of this species of employ upon the catamenial function is notably abundant, and raises the query, if the fact of pedal rather than manual muscular power as here involved is the real cause of a greater effect; or, whether the simpler methods of argument cause those affected (by localizing the energy in closer relation to the parts seen to be most influenced) to infer an injury that they would be slow to recognize when remote agents, as the hand, are active, and the brain must be summoned to greater participation to produce the effect. As an employment still enlisting the labors of large numbers of young women of the ages we are considering, notwithstanding the very considerable introduction of steam- power to its uses, it is well worthy the consideration of the economist and legislator; for from its ranks the offices of wife and mother are filled to no mean degree, few of the class continuing many years in the work, while those engaged therein are, as a rule,