ABSTRACT
Chatham Island – Craters composed of a peculiar kind of tuff – Small basaltic craters, with hollows at their bases – Albemarle Island, fluid lavas, their composition – Craters of tuff, inclination of their exterior diverging strata, and structure of their interior converging strata – James Island, segment of a small basaltic crater; fluidity and composition of its lava streams, and of its ejected fragments – Concluding remarks on the craters of tuff, and on the breached condition of their southern sides – Mineralogical composition of the rocks of the archipelago – Elevation of the land – Direction of the fissures of eruption.
