The brief paper on the “Stratigraphical Succession of the Cambrian Faunas in North America,” communicated to Nature of Oct. 4, 1888, will have been read by British students of the Geology of the Lower Patæozoic Rocks with especial interest and satisfaction, as it puts an end to a controversy between European and American Geologists, and brings into harmony the sequence and palæontology of the Cambrian faunas on both sides of the Atlantic.