186. Section of intercalated dark limestone, shale and chert in the tuff south of Poyll Vaaish Bay, Isle of Man 26 187. Section of part of a volcanic neck on shore to the south-east of Poyll Vaaish Bay, Isle of Man 29 188. Section of successive discharges and disturbances within a volcanic vent. Scarlet Point, Isle of Man 29 189. Section of dyke and sill in the tuffs west of Scarlet Point, Isle of Man 30 190. Section on south side of vesicular sill west of Scarlet Point 31 191. Bands of vesicles in the same sill 31 192. Croghan Hill, King's County, from S.S.W. 38 193. Section in quarry on roadside east of Limerick, close to viaduct of the Limerick and Erris Railway 44 194. Section of the volcanic escarpment, east of Shehan's Cross-roads, south of Limerick 45 195. View of Derk Hill, a volcanic neck on the south side of the Limerick basin 47 196. Section across the Limerick volcanic basin 48 197. Section of a bed of volcanic breccia in the Carboniferous Slate; White Bull Head, County Cork 50 198. Volcanic breccia invading and enclosing Carboniferous slate, White Bull Head 50 199. General section across the Permian basin of Ayrshire 59 200. Section of lavas, east side of Mauchline Hill 60 201. Section of the top of the volcanic series near Eastside Cottage, Carron Water, Nithsdale 60 202. Section of two outliers of the Permian volcanic series at the foot of Windyhill Burn, Water of Ae, Dumfriesshire 61 203. The Green Hill, Waterside, Dalmellington, from the south; a tuff-neck of Permian age 62 204. Patna Hill from the Doon Bridge, Ayrshire; a tuff-neck of Permian age 63 205. Ground plans of Permian volcanic vents from the Ayrshire Coal-field. On the scale of six inches to a mile 64 206. Section of sills traversing the Permian volcanic series. River Ayr, Ballochmyle 66 207. Section showing the relations of the later rocks of Arthur Seat 68 208. Section in brooks between Bonny town and Baldastard, Largo 70 209. View of Largo Law from the east 71