Geologies; and, that the Third Part con- -siders the ^G^ofthe changes or revolutions lohich the Earth has undergone, according to both Geologies. The results of these several investigations, will be found combined in the Conclusion, with which the treatise is terminated. I have endeavoured, by keeping the thread of the argument simple and compressed, to avoid all superfluous dilatation and digression; . in which endeavour, I hope I shall be found to have succeeded. It was originally designed, and it has been solely prepared, for such earnest and sincere inquirers as are anxious to relieve their minds from perplexity, or to disengage them from error, in the high and important subjects of which it treats; and who are willing to advance in the prosecution of the truth re specting them, as far as the principles of that truth, actively pursued, are capable of con ducting them. Such advance is entirely frustrated by the practice which, in similar discussions, has too frequently prevailed, of
