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Mrs. S. Maxon-Cobb, Boulder, Colo.; The Geology of Ogle County, by Mrs. C. M. Winston, Chicago; The Fossils of the Upper Silurian, by Mrs. Ada D. Davidson, Oberlin, Ohio; Crinoidea and Blastoidea of the Kinderhook Group as found in the Quarries near Marshalltown, Iowa, by Jennie McGowen, A.M., M.D., Davenport, Iowa; The Evolution of the Barchiopoda, by Miss Agnes Crane, Brighton, England; The Mastodon in Northern Ohio; Post-Glacial or Pre-Glacial? by Miss Ellen Smith, Painesville, Ohio; Palæontology, by Miss Jane Donald, Carlisle, England; Glacial Markings, by Miss Thomson, Newcastle, England.

The general session of the Geological Congress convened at Chicago on August 24, immediately following the close of the meeting of the American Association at Madison.

The Congress was welcomed felicitously by the President of the Auxiliary, Charles C. Bonney, and briefly by the Chairman of the Committee on Organization.

Dr. A. R. C. Selwyn presided over the first session; Professor Joseph LeConte and Mr. Hjalmar Lundbohm, of Sweden, over the second session; and Professor James Hall and Dr. Groth, of Munich, over the third. The following papers were presented:

Pre-Cambrian Rocks of Wales, Dr. Henry Hicks, London, England; The Classification of the Rock Formations of Canada, with Special Reference to the Paleozoic Era, by Henry M. Ami, Geological Survey of Canada; The Cordilleran Mesozoic Revolution by Dr. A. C. Lawson, University of California; The Oil Shales of the Scottish Carboniferous System, by Henry M. Cadell, late of the Geological Survey of Scotland; Distribution of Pre-Cambrian Volcanic Rocks along the Eastern Border of the United States and Canada, by Professor George H. Williams, Johns Hopkins University; Huronian versus Algonkian, by Dr. A. R. C. Selwyn, Director Geological Survey of Canada; On the Migration of Material during the Metamorphism of Rock Masses, by Alfred Harker, St. John's College, Cambridge, Eng-