the intruded slabs are much altered on each side of the dikes. The dike is much altered into a hard flinty iron chlorite material that looks like the basalt of the dikes. The core of the volcano is diorite. This crystalline diorite flow has raised of 200 to 300 feet the sedimentaries. In the afternoon went on to Mt. Helena Island to see the agglomerate. The basalt in pushing upward ground up the original sedi- mentaries, breaking it into are signs and wrapped it into the basalt, or making the agglomerate. In places the pieces are small and much al- tered in return the pieces are larger. Black shale fragments largely and especially towards where the dike comes to the surface. In the area of the Sheldon bay limestone the basalt is largely tinged with dirt. The Sheldon bay limestone occurs in the largest masses easily 20-feet in length but none of it has been once or less broken and rolled upon itself. This is especially more seen where weathering