Some farther considerations concerning alkaly and acid, by way of appendix to a late essay : Wherein the terms are made clear, and the natures of them both more fully explained: together with an answer to the objections that have been raised against some things contained in the said essay. By John Colbatch, physician. - Colbatch, John, (printed for Dan. Brown, at the Black Swan and Bible without Temple-Bar,, 1696)