...overlain, as in Wales, by Dictyonema-shales. These rocks, on the east of the Herefordshire Beacon, arc altered by trap-dykes, which were shown to be of later...deposition and their subsequent elevations and depressions. JUNE 22, 1864. T. Currie Gregory, Esq., CE, 149 West George Street, Glasgow ; John Hamilton, Esq.,...

...and that the overlying black shales correspond with the Upper Lingulabeds, the whole being overlaid, as in Wales, by Dictyonema-shales. These rocks, on...deposition and their subsequent elevations and depressions. Specimens of the new mineral termed Langite, a basic sulphate of copper, were exhibited by Professor...

...trap-rocks. It was then shown that the hollybush sandstone is the equivalent of the middle Lingula- flags, and that the overlying black shales correspond with...deposition and their subsequent elevations and depressions. June 22nd. The following communications were read. — 1. " On some Bone and Cave-deposits of the Reindeer-period...

...of gneiss (both micaceous and hornhlendic), mica-schist, hornblende-schist, &c., all invaded by vein of granite and trap-rocks. It was then shown that...deposition and their subsequent elevations and depressions. XXVIII. Intelligence and Miscellaneous Articles. ON THE ROTATORY POWER OF ACTIVE LIQUIDS AND OP THEIR...

...traversing the crystalline rocks before alluded to. Allusion was next made to the Upper Liandovery strata which overlie unconformably the primordial...faults in the district were described in detail. Dr. Hull concluded with some remarks on the general relations of the rock. of the Malvern Hills with those...

...east of the Herefordshire Beacon, are altered by trapdykes, which were shown to be of later date thun those traversing the crystalline rocks before alluded...deposition and their subsequent elevations and depressions. XXVIII. Intelligence and Miscellaneous Articles. ON THE ROTATORY POWER OF ACTIVE LIQUIDS AND OF THEIR...