In this study we are concerned with Vibration Theory and the Problem of
Dynamics during the half century that followed the publication of
Newton's Principia. The relationship that existed between these
subject!! is obscured in retrospection for it is now almost impossible
not to view (linear) Vibration Theory as linearized Dynamics. But during
the half century in question a theory of Dynamics did not exist; while
Vibration Theory comprised a good deal of acoustical information, posed
definite problems and obtained specific results. In fact, it was through
problems posed by Vibration Theory that a general theory of Dynamics was
motivated and discovered. Believing that the emergence of Dynamics is a
critically important link in the history of mathematical science, we
present this study with the primary goal of providing a guide to the
relevant works in the aforemen- tioned period. We try above all to make
the contents of the works readily accessible and we try to make clear
the historical connections among many of the pertinent ideas, especially
those pertaining to Dynamics in many degrees of freedom. But along the
way we discuss other ideas on emerging subjects such as Calculus, Linear
Analysis, Differential Equations, Special Functions, and Elasticity
Theory, with which Vibration Theory is deeply interwound. Many of these
ideas are elementary but they appear in a surprising context: For
example the eigenvalue problem does not arise in the context of special
solutions to linear problems-it appears as a condition for isochronous
vibrations.