159 
160 
161 
162 
163 
164 
165 
166 
167 
168 
169 
170 
171 
172 
173 
174 
FOREIGN ROCKS. 29 
Coal Strata. Snebstone. 
Coal Schist, indurated by igneous action. Tenby, 
S. Wales. 
Millstone Grit. Europe. 
Coal Shale, with Vegetables. Europe. 
Dolomitic Sandstone — Dunstone, altered by 
igneous action. Matlock. 
Cornbrash Limestone—Oolite. Europe. 
Oolite, Portland, 
Forest Marble of the Oolite. Europe. 
Portland Stone. Portland. 
Fire Stone, or Malm Rock, or Upper Green Sand. 
Is. of Wight. 
Siliceous Grit, from Lower Green Sand. Ightam, 
Kent. 
Coral Rag—Oolite. Europe. 
Brown Spar. Vesuvius. 
Consolidated Mud (Diluvium). 
Trap Rock. Scotland. 
Great Oolite. Europe. 
175 to 325 Volcanic Rocks. Vesuvius, 
