Definition of "inservient"

[…] although their intellectuals had not failed in the theory of truth, yet did the inservient and brutall faculties control the suggestion of reason […]

1646, Thomas Browne, Pseudodoxia Epidemica‎, London: Edw. Dod & Nath. Ekins, published 1650, Book I, Chapter 1, p. 2

[…] if the discourse be touching Happiness it self, why should not Happiness or Pleasure be a greater Good than Virtue, since it is the End, to the attainment whereof Virtue is but inservient?

1656, chapter 8, in Walter Charleton, transl., Epicurus’s Morals: Collected, And faithfully Englished‎, London: P. Davies, published 1926, page 28