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Chap. 1. The excellency of these Arts.
Why they were concealed by
the Ancients. The Authors that have
treated of them.
Ch. 2. Concerning the name of this Art.
That it may properly be styled liberal.
The subject and nature of it.
Ch. 3. Of the first Mechanical faculty,
the Balance.
Ch. 4. Concerning the second Mechanic
faculty, the Lever.
Ch. 5. How the natural motion of living
creatures is conformable to these art-
ificial rules.
Ch.6.