The American Journal of Science and ArtsS. Converse, 1860 - Geology |
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Page 68
... shales in the greatest abundance . Sphenopteris Brgt . - This genus , to which I have united the Gleichenites of M. Göppert , appears from the number of its spe- cies , to be far more abundantly represented in Europe than in America ...
... shales in the greatest abundance . Sphenopteris Brgt . - This genus , to which I have united the Gleichenites of M. Göppert , appears from the number of its spe- cies , to be far more abundantly represented in Europe than in America ...
Page 71
... large , especially in the shales of the first bed of coal above the conglomerate . All the species ascertained , from the form of their scales , apparently the only reliable specific. L. Lesquereux on the Coal Formations of N. America . 71.
... large , especially in the shales of the first bed of coal above the conglomerate . All the species ascertained , from the form of their scales , apparently the only reliable specific. L. Lesquereux on the Coal Formations of N. America . 71.
Page 72
... shales and in the sandstone of the low coal of our American basin is considerable . They follow the stratigraphi ... shale of coal No. 1B . By its concave leaves , decurrent and em- bracing at the base , it differs from any of the twelve ...
... shales and in the sandstone of the low coal of our American basin is considerable . They follow the stratigraphi ... shale of coal No. 1B . By its concave leaves , decurrent and em- bracing at the base , it differs from any of the twelve ...
Page 75
... 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 . Immediately above the oil - coal is a seam of ...
... 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 . Immediately above the oil - coal is a seam of ...
Page 76
... shale is above the Oil - Coal , and Oil - Batt below in which have been found Lepidodendra and ap- parently molar teeth with three fangs , flattened modiola shells , and spines or small fish - teeth . The Oil - Batt has been found in ...
... shale is above the Oil - Coal , and Oil - Batt below in which have been found Lepidodendra and ap- parently molar teeth with three fangs , flattened modiola shells , and spines or small fish - teeth . The Oil - Batt has been found in ...
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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