I have been this autumn in the Land of the Giant's Causeway and of the Giant Stag. For a long time it had been my earnest desire to become acquainted with “The Green Isle.” In my colleague, Professor von Lasaulx, I found a wished-for companion on my journey. It is easy to get to Ireland. In a single night's journey one is whirled from London to Dublin viá Holyhead. In Dublin the best directions for a geologist are to be had at the Geological Survey Office for Ireland. which forms a department of the Government Geological Survey of Great Britain. Prof. Hull, the Director of the establishment, and Mr. Hellier Baily, the Palæontologist attached to it, afforded me, with the greatest kindness, every necessary assistance.