First Sketch of Some of the Results of a Second Geological Survey of Russia

able accumulations already arranged Arzamas band basin beds of marls black British Buch calcareous carbonife Carboniferous Systems cause central chain characters chief class clearly communicate completely composed connect considerable constitute contain copper Count country cover cretaceous system deposits Devonian and Carboniferous direction discovery distinguished divisible Donetz entering esting examination exist formations fossils found friend geological geologist German government green grits inter known land large last year's survey less Letter limestone list Lithuania localities lower new red Lower Volga masses mineral name Naturalists of Moscow nearly North of Russia numerous observe occasion occupied old red sandstone oolitic opinion Orel Orenbourg Permian System Petersburgh plants present preserved proceeded refer region relation represent results rises river rous sands schists Sea of Azof sedimentary rocks sent series shales Silurian System Society of Naturalists South southern strata studied succession tract Trias True type upper Ural Mountains vast Verneuil whilst white chalk yellow Zechstein