In the following pages the writer has attempted to collate the records of boulders of Scandinavian origin which are scattered through many publications. The lists of boulders in Table C of this paper are an amplified version of similar lists drawn up by T. Sheppard in 1895, and, in addition, lists of percentages of various types of boulders are shown in Tables A and B, those in A having been already recorded, while those in B are original. From a study of the statistics set out below the writer has ventured to make certain suggestions with regard to the debated question of the extension of a Scandinavian ice-sheet over Britain.

The known cephalopod faunas of Upper Jurassic and earliest Cretaceous age in South America were reviewed by the late Professor V. Uhlig from the standpoint of their general character and relationships. In Mexico and in Texas certain lamellibranch species occur as part of a faunal development which Uhlig regarded as having an intimate connexion with the assemblages of the South Andean Jurassic-Cretaceous province. He remarked upon the regional unity shown by the faunas of Upper Jurassic age described by C. Burckhardt from the Mazapil district in Mexico, by Castillo and Aguilera from San Luis Potosi (Mexico), and by Cragin from the Malone district in Texas. The fossils described, from San Luis Potosi and from Cragin's so-called Malone Jurassic Formation comprise some bivalve shells, particularly Trigoniae, which resemble closely certain characteristic forms found in undoubted Lower Cretaceous deposits in South America, and also in the Africano-Indian province, of Krenkel's nomenclature.

In a mighty curve, convex to the west and north, the Central Alpine Zone trends from the Mediterranean to the eastern confines of Switzerland in the north-east, marked by a series of granite massives, the principle of which are: Mercantour, Pelvoux, Belledonne, Mont Blanc, Aar, and St. Gotthard.