Proteus ecclesiasticus, or, George Keith varied in fundamentalls : acknowledged by himself to be such, and prov'd an apostat, from his own definition, arguments, and reasons : contrary to his often repeated false pretentions, whereby he hath laboured to deceive the people : telling them he is not varied from any fundamental principle, nor any principle of the Christian faith ever since he first came among the Quakers : with remarks on Daniel Leed's abusive almanack for the year 1703 : by way of postscript.