Berkeley's Note on the Doctrine of Fluxions in `Siris'

Berkeley includes the following note to his discussion of absolute space and absolute motion in section 271 of Siris:

Our judgement in these matters is not to be overborne by a presumed evidence of mathematical notions and reasonings, since it is plain the mathematicians of this age embrace obscure notions, and uncertain opinions, and are puzzled about them, contradicting each other and disputing like other men: witness their doctrine of Fluxions, about which these ten years, I have seen published about twenty tracts and dissertations, whose authors being utterly at variance, and inconsistent with each other, instruct by-standers what to think of their pretensions to evidence.