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1 1|    natural function must lose power when they work beyond the
2 1| instance, the eyes [must lose power] from [too long continued]
3 1| working period, will lose its power, and will do its work no
4 2|       accompanied by a common power, in virtue whereof a person
5 2| sensory organs also must lack power to perceive; but when one
6 2|     for this also to lose its power.~We must next state the
7 2|    endowed by nature with the power to move, but cannot with
8 3|  their native heat of all its power, and compels it to retire?