Catalogue of Specimens. 673 



Porphyry. 



1206 and 1207 Compact Feldspar, Newbury. 



1208 do with talc? Sharon. 



1209 do with dendritic impressions, Medford. 



1210 do with quartz, Natick. 



1211 do somewhat foliated, a vein in sienite, Whately. 



1212 do somewhat brecciated, Dorchester. 



1213 do do Blue Hills. 



1214 do a vein in black serpentine, Newbury. 



1215 do Nahant 



1216 do slightly porphyritic, Hingham. 



1217 do Lynn. 



1218 do somewhat foliated, Natick. 



1219 do lime quarry, Stoneham. 



1220 do variegated Medford. 



1221 do passing into siliceous slate, Maiden. 



12322 do do with a minute quantity of gold ? Blue Hills. 



1223 do red, passing into porphyry, do 



1224 do do Hingham. 



1225 do do Milton. 



1226 do do Rowley. 



1227 do do Ipswich. 



1228 do do exhibiting traces of a slaty struc.Kents Isl. Newbury. 



1229 and 1230 do variegated somewhat foliated, Dedham. 



1231 Porphyry approaching Sienite (polished) Maiden. 



1232 do with traces of a slaty structure, Nantasket Beach. 



1233 do base purple, (polished) bowlder, Orleans. 



1234 do base black do Nantasket Beach. 



1235 do approaching to amygdaloid, Westborough. 



1236 Between greenstone and porphyry, Ipswich. 



1237 do porphyry and compact feldspar, Milton. 



1238 Porphyry, Blue Hills. 



1239 Porphyry dark gray, (polished) Blue Hills. 



1240 do do do North of Boston. 



1241 do containing quartz nodules (polished), Milton. 



1242 do light gray do. do 



1243 do reddish, Nastasket Beach. 



1244 do ? perhaps Varioloid Wacke, Newton. 



1245 do containing quartz and feldspar crystals. Milton. 



1246 do red and green, (smoothed) Maiden. 



1247 do red with quartz and feldspar crystals, a bowlder, Newport,R.I. 



1248 do red, Maiden. 



1249 do do Lynn. , 



1250 do red base, Nantasket Beach. 



1251 do do (polished) Blue Hills 



1252 do base red do North of Boston. 



1253 do do do Nantasket Beach. 



1254 do greenish, do Maiden. 



1255 do lively green, do Milton. 



1256 do Needham. 



1257 do passing into sienite, Maiden. 



1258 do reddish brown, crystals of feldspar and quartz, polished, B.HilJs. 



1259 do green, passing into sienite, (smoothed)J Maiden. 



1260 do base dark green, crystals feldspar and quartz.do Blue Hills. 



1261 do variegated, feldspar and quartz crystals do -do 



1262 do base reddish, imbedded crystals chiefly quartz do Quincy. 



1263 do do do ' do Milton. 



1264 Brecciated Porphyry, reddish, (polished) Halfway Rock, Atlan. Ocean* 



1265 do (smoothed) Lynn. 



