The American Journal of Science and ArtsS. Converse, 1860 - Geology |
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Results 1-5 of 31
Page 4
... sandstone , the Carboniferous and the Devonian , and are lost at last in the Permian . Near their end , when they are already thinning out , we have , in the old red - sandstone formation , the " buckler head , " or , to use the Greek ...
... sandstone , the Carboniferous and the Devonian , and are lost at last in the Permian . Near their end , when they are already thinning out , we have , in the old red - sandstone formation , the " buckler head , " or , to use the Greek ...
Page 67
... Sandstone of Pennsylvania ; the third found at the base of the millstone grit of Pennsylvania belongs by its typical form to the true coal measures . Nephropteris Brgt . - Cannot be separated from the genus Neu- ropteris , since it ...
... Sandstone of Pennsylvania ; the third found at the base of the millstone grit of Pennsylvania belongs by its typical form to the true coal measures . Nephropteris Brgt . - Cannot be separated from the genus Neu- ropteris , since it ...
Page 72
... sandstone of the low coal of our American basin is considerable . They follow the stratigraphi- cal distribution of the genus Lepidodendron , though they do not appear in any way related to this genus . About twenty well marked but ...
... sandstone of the low coal of our American basin is considerable . They follow the stratigraphi- cal distribution of the genus Lepidodendron , though they do not appear in any way related to this genus . About twenty well marked but ...
Page 75
... sandstone , actual thickness not yet proved ; then shales with bands of ironstone , and Stigmaria roots with Sigillaria stems , and a few detached fern leaves , in such soft shale that I have not been able to preserve any good specimens ...
... sandstone , actual thickness not yet proved ; then shales with bands of ironstone , and Stigmaria roots with Sigillaria stems , and a few detached fern leaves , in such soft shale that I have not been able to preserve any good specimens ...
Page 120
... sandstones . After describing the various forms of apparatus used in distilling , into one of which superheated steam was introduced , he enumerates the products of distillation as follows : I. A white , almost odorless , very limpid ...
... sandstones . After describing the various forms of apparatus used in distilling , into one of which superheated steam was introduced , he enumerates the products of distillation as follows : I. A white , almost odorless , very limpid ...
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Common terms and phrases
acid Alethopteris alloy American animal appear Arago arch arsenic aurora axis ball Berghaus Annalen bituminous Brgt bright brilliant Cape Cape Henry carbon carbonic acid catalogues chemical clouds coal coal-tar color containing Cordaites crystals diameter direction disinfection distance distillation earth eupion experiments fact feet fossil genera genus Göpp Gulf Stream heat horizon inches initial velocity Jour Journal Kämtz latitude Lepidodendron light Lsqx mass matter metal meteor miles mineral motion nearly nebular hypothesis Neuropteris Noble County northern observations obtained Oil-Coal organic oxygen paraffine Pecopteris peculiar phenomena plants portion present produced Prof rays remarkable rifle river seen Semi-minor axis Sept shales Sigillaria solar species specimens Sphenopteris stars Sternb stone strata streamers substances surface Survey temperature theory thickness tion toises Unifilar vapor volatile whole zenith zenith telescope zinc