Page:The Analyst; or, a Discourse Addressed to an Infidel Mathematician.djvu/17

Rh And uch Velocities are called Fluxions: and the Quantities generated are called flowing Quantities. Thee Fluxions are aid to be nearly as the Increments of the flowing Quantities, generated in the leat equal Particles of time; and to be accurately in the firt Proportion of the nacent, or in the lat of the evanecent, Increments. Sometimes, intead of Velocities, the momentaneous Increments or Decrements of undetermined flowing Quantities are conidered, under the Appellation of Moments.

IV. By Moments we are not to undertand finite Particles. Thee are aid not to be Moments, but Quantities generated from Moments, which lat are only the nacent Principles of finite Quantities. It is aid, that the minutet Errors are not to be neglected in Mathematics: that the Fluxions are Celerities, not proportional to the finite Increments though ever o mall; but only to the Moments or nacent Increments, whereof the Proportion alone, and not the Magnitude, is conidered. And of the aforeaid Fluxions Rh