418 EEPORT— 1888. 



1 54. South of Plas Berw — Gneiss with laminar orientation. 



155. Tros-y-gors, near Menai Bridge — Elemental orientation (fig. 7). 



156. North of Union Inn, Holyhead Road — Coarse mica schist with linear 



orientation and garnets. 



157. Cefn Du, Gaerwen — Microspectral and crape structure (fig. 14). 



158. East of Gaerwen Windmill — Coarse microspectral mica schist. 



159. Y-graig, Gaerwen — Gneiss microspectrally polarised at edges of elements. 



160. North end of ' gneiss,' Holland Arms — Microspectral, vermiculite. 



161. Gors Llwyd, near Llaniestyn — Microspectrally polarised at edges of frag- 



ments. 



162. Minffordd Waste — Fragmentary with chloritic base. 



163. Over Tyn-j'-Mynydd, Mynydd Llwj'ddiart — Laminated schist. 



164. South of Newborough — Variolitic hornblende epidote schist. 



165. Side of River Braint, Bryn Gwyn — Slate-like mylonised hornblende epidote 



schist (tig. 24). 



166. Intrusive, in Llangaflfo Cutting — Fine-grained hornblende epidote rock.' 



167. Tyn-drain, River Braint — Glaucophane and epidote. 



168. Anglesey Monument (longitudinal) — Felted glaucophane and epidote schist. 



169. Anglesey Monument (transverse) — Felted glaucophane and epidote schist. 



170. Carnen Goch, near Llanfair — Mylonised glaucophane epidote schist. 



171. Road to Castellor (S.)— Glaucophane and epidote schist with tourmaline. 



172. Road to Castellor (N.) — Variolitic glaucophane epidote schist. 



173. Gaerwen Windmill — Squeezed hornblende and epidote in bands. 



174. Behind Gaerwen Windmill — Orientated fine-grained hornblende and 



epidote. 



175. North of Holland Arms — (Epi ?) diorite with sphene. 



176. North of Holland Arms — Contorted hornblende epidote schist. 



177. South of Y-graig — Fine-grained hornblende and epidote schist with rutiles. 



178. North end of wood, Y-graig — Decomposed epidote and hornblende in bands. 



179. North of Y-graig — Cataclastic diorite. 



180. Ysgubor Llwyd, Gaerwen — Coarse (epi ?) diorite. 



181. North of Holland Arms — Abundant hornblende with epidote and sphene. 



182. North end of ' gneiss,' Holland Arms — Mylonitic diorite. 



183. Llangefni to Beaumaris — Cataclastic diorite. 



184. South of Pentreath — Powdered diorite. 



185. West of Tyn Lon — Cracked fine-grained hornblende and epidote. 



186. Summit of Jlynydd Llwyddiart — Cracked fine-grained hornblende and 



epidote. 



187. Cadnant Vale, Menai Bridge — Fine-grained rock. 



188. Tj Gwyn, Menai Bridge — Fine-grained rock with fragments, microcline. 



189. Bryn Minceg, North of Llandegfan — Many fragments in chloritic ground- 



mass. 



190. North-east end of Malldraeth Marsh — Fine mylonitic slate. 



191. South of Beaumaris — Fine epidote dust rock. 



192. Garth Ferry to Beaumaris — Fine decomposed epidote in groundmass of 



chlorite. 



193. Pen-y-Parc, Beaumaris — Mylonitic grit (fig. 17). 



194. North of Garth Ferry — Entirely cataclastic. 



195. Ty Garw, Beaumaris — Fine-grained rock. 



196. Clawd-y-Parc, north of Llandegfan — Mylonitic crystalline fine-grained 



rock. 



197. Gallows Point, Beaumaris — Fragments in quartzose and calcitic mass. 



198. Llyn Bodgolched, north of Beaumaris— Fine-grained rock. 



199. Tyddyn, north of Beaumaris — Fine-grained rock, full of mylonitic lines. 



200. Near Coedmawr, Llanfaes — Mylonised fine-grained rock with fragments. 



201. Penrhos, near Wugan — Medium-grained rock. 



202. Rhyd Eilian — Coarse mosaic limestone. 



203. Quartz knob, Pen-y-Parc, Beaumaris — Various rounded fragments, mostly 



quartz, in pure quartz matrix. 



204. Gwlad)'S — Isolated rhombohedral calcite in dusty matrix. 



205. Intrusive, Gwladys — Fine mosaic of calcite and quartz. 



206. Spheroidal rock, Gwladys — Spicular plagioclase. 



207. Variolitic, Gwladys— Spicular with imperfect spherules and varioles (fig.22). 



208. Gwladys —Fine-grained rock. 



