The simplest way of accomplishing the object proposed, seemed to be, to present a General Outline of the System, in one continued Discourse; and to introduce afterwards, in the form of Notes, what farther elucidation any particular subject was thought to demand. Through the whole, I have aimed at little more than a clear exposition of facts, and a plain deduction of the conclusions grounded on them; nor shall I claim any merit to myself, if, in the order which I have found it necessary to adopt, some arguments may have taken a new form, and some additions may have been made to a system naturally rich in the number and variety of its illustrations.
Of the qualifications which this undertaking requires, there is one that I may safely suppose my self to possess. Having been instructed by Di Hutton himself in his theory of the earth; having lived in intimate friendship with that excellent man for several years, and almost in the daily habit of discussing the questions here treated of; I have had the best opportunity of understanding his views, and becoming acquainted with his peculiarities, whether of expression or of thought. In the other qualifications necessary for the illustration o a system so extensive and various, I am abundantly sensible of my deficiency, and shall therefore with great deference, and considerable anxiety wait that decision from which there is no appeal.
Edinburgh College, }
1st March 1802. }
TABLE
OF
CONTENTS.
INTRODUCTION. Object of a Theory of the Earth. Division of minerals into Stratified and Unstratified.
SECTION I.
PHENOMENA PECULIAR TO STRATIFIED BODIES.
1. Materials of the Strata.