The following paper shows that Wegener's attempt to fit the Americas against Euro-Africa leaves discrepancies of as much as 1,500 miles; that there is no fitting at all in the Central American region; that when Newfoundland is united with Ireland and the easternmost cape of Brazil fitted into the African Bight of Biafra, Central America is parted from South America by 1,200 miles, and Alaska from Siberia by 600 miles, leaving in the latter instance a deep ocean that is fatal to all inter-migration of marine and land life between these continents.

It next explains that the tectonic structures and the faunal assemblages on either side of the Atlantic fit badly, that we have here only similarities and not identities, and that the faunas do not have more than 5 per cent of species in common instead of the 50-75 per cent called for on the basis of Pangaea. The detailed historical geology and stratigraphy of Newfoundland and Ireland, contrasted in adjacent columns, show that there are here no exact identities and few similarities.

Finally, the writer discusses the small residuum of the Wegener hypothesis that has been becoming more and more apparent during the past fifteen years to all students of geosynclines and mountain structures, namely, that the continents appear to have moved horizontally and differently throughout geological time, but how much and in what directions are problems for the future. He also points out briefly how more harmony may be hoped for between geologists, paleontologists, and geophysicists working along these lines.