Chemical agents which produce the decomposition of mineral substances at the surface, § 92, 93. Mechanical agents, § 95, 96. Proofs of wearing from the sea shore, § 97, 98. Rivers, § 99, 100. Defiles among mountains, § 102. Supply of the soil from the decomposition of rocks, § 103. Gravel in the soil, § 104, 105. Gold found in the soil, § 106. Tin, § 107. Proofs of waste from mountainous countries, § 108, 109. Structure of Valleys, § 111. Transportation of stones, § 112. Nearest measure of the waste, § 113. General remarks, § 114, 115. No production of minerals on the surface, § 116. Reproduction at the bottom of the sea, § 117. Continued system of decay and renovation, § 118. Defence against the charge of impiety, 119. Antiquity and order of the revolutions of the globe, § 120, 121, 122, 123, 124. Consistency with the Sacred Writings, § 125. Scope of this theory of the earth distinguishes it from others; beauty and extent of its views, § 126. New facts, § 127. Comparison of this theory with that of Buffon, § 129. Of Lazzaro Moro, § 130. _Plutonic_ system, § 131. Distinguished by the principle of compression, § 132. Explains the oblate figure of the earth, _ib._ Prejudices against this system, § 133. What may be expected from the progress of science, § 134. NOTES AND ADDITIONS. NOTE I.--Origin of Calcareous Earth. p. 143 Dr Hutton's opinion on this subject accurately stated, § 135. Misrepresented by Kirwan, § 136. NOTE II.--Origin of Coal. p. 147 Vegetable origin of coal. Opinion of Buffon, § 137.--of Arduino, _ib._--of Lehman, § 138. Distinction attempted between wood coal and mineral coal, § 139. Not of different origin, but gradually pass one into the other, § 140. Bovey coal, § 141. Kirwan derives the matter of mineral coal from the decomposition of hornblende, &c. 143. Absurdity of this supposition, § 144, 145, 146, 147. NOTE III.--Primitive Mountains. p. 160 Lehman introduced the term Primitive mountains, § 149. Supposed more ancient than organized bodies, § 150. Stratification of primitive mountains denied by Pini, and maintained by Saussure, § 151. NOTE IV.--Primary Strata not Primitive. p. 163 Shells found in primary strata, § 152. Sandstone in primary mountains, § 153. Quartzy sand in the schistus of the Grampians, _ib._ Rocks distinguished by Werner into three orders, § 154. Objections to this arrangement, § 155. NOTE V.--Transportation of the Materials of the Strata.