The Rev. Richard Baron, F.G.S., of the London Missionary Society, has sent to the British Museum some interesting reptilian remains from the Jurassic rocks of Madagascar, which he obtained during 1891, at Andranosamonta village, a locality situated in the north-western part of the Island. They were enclosed in a tenacious slielly limestone, so that before their examination could be proceeded with it was necessary to submit them to careful development and cleaning, a work whioh has been most ably carried out by Mr. Richard Hall, the Assistant Formatore of the Geological Department.

The sedimentary archive preserved at passive margins provides important clues about the evolution of continental topography. For example, histories of African uplift, erosion, and deposition of clastic sedimentary rock provide information about mantle convection. Furthermore, relating histories of uplift and erosion from regions where sediment is generated to measurements of efflux is important for understanding basin evolution and the distribution of natural resources. We focus on constraining Mesozoic to Recent solid sedimentary flux to northwest Africa's passive margin, which today is fed by rivers draining dynamically supported topography. Histories of sedimentary flux are calculated by mapping stratigraphy using seismic reflection and well data courtesy of Tullow Oil Plc and TGS. Stratigraphic ages, conversion from two‐way time to depth and compaction, are parameterized using biostratigraphic and check‐shot records from exploration, International Ocean Discovery Program and Deep Sea Drilling Project wells. Results indicate that Late Cretaceous to Oligocene (∼100–23 Ma) sedimentary flux decreased gradually. A slight increase in Neogene sedimentary flux is observed, which is concomitant with a change from carbonate to clastic sedimentation. Pliocene to Recent (∼5–0 Ma) flux increased by an order of magnitude. This history of sedimentary flux and facies change is similar to histories observed at other African deltas. To constrain sources of sedimentary flux, 14,700 longitudinal river profiles were inverted to calculate a history of continental uplift. These results were used to parameterize a simple “source‐to‐sink” model of fluvial erosion and sedimentary efflux. Results suggest that increased clastic flux to Africa's deltas from ∼30 Ma was driven by denudation induced by dynamic support.

Dr. W. F. Hume, Superinendent of the Geological Survey of Egypt has recently sent to the Geological Department of the British Museum, for determination and report, a few Pelecypod shells of fluviatile origin, directly associated with the marine genus Galeolaria, which he, in company with his colleagues Messrs. Crosthwaite and Murray, lately discovered in the ferruginous beds of the Nubian Sandstone Series of Southern Egypt.

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~HE DISTaZOT SVRROUI~Dr~a TH~ 1)a~1aXS~,LV,ES. 277 andesites were merely unustml varieties of biotite-andesite. The groundmass is commonly pilotaxitie, less frequently hyalopilitie. The best example of these came from the White Cliffs (Dardanelles). An excellent biotite-andesite was collected on the southeastern slope of the watershed above Panagia (Imbros) ; it contained, in addition to large hexagonal plates of biotite, a little much-corroded hornblende and porphyritic green augite. Five specimens from the island of Strati were all hornblendeandesites (containing a little dark-brown biotite), and were exceptionally fresh and good examples of this class of rocks. Typical hypersthene-andesites, much decomposed, occur at Korou. Olivine-basalts were found on the Kuru Dagh and near Keshan : from the latter locality some peculiar rocks were obtained. One of these resembled an augitite; another consisted of olivine, brownish augite, biotite, plagioclase, and orthoclase-felspar, with an abundant clear glass)-base. In the Serian-Tepd district, examples of serpentine, amphibolite, epidote-amphibolite, and serpentine-schist occur. The serpentines include weathered dunites and harzburgites.