...has been filled more or less perfectly with mineral substances ; or, in other words, an aggregation of mineral matter, accompanied by metalliferous ores,...which had its origin in some deep-seated cause, and may be presumed to extend for an indefinite distance downwards. True veins are almost universally admitted...

...eruptive masses of ore, as for instance, the iron mountains of Lake Superior and Missouri ; stockwerk deposits, or bodies of rock impregnated over an irregular...connected with extensive movements of the earth's cruet, and for this reason they are believed to extend indefinitely downwards ; an assumption which...

...parallel with the stratification, and not to he depended on in depth. Gash-veins may cross the formation at any angle, but are limited to one particular group...a crevice or fissure, which had its origin in some deep seated cause, and which may be presumed to extend for an indefinite distance downwards."* True...

...has been filled more or less perfectly with mineral substances ; or, in other words, an aggregation of mineral matter, accompanied by metalliferous ores,...which had its origin in some deep-seated cause, and may be presumed to extend for an indefinite distance downwards. True veins sometimes attain a length...

...which has been filled more or less perfectly with mineral snbstances, or in other words, an aggregation of mineral matter, accompanied by metalliferous ores,...which had its origin in some deep-seated cause, and may be presumed to extend for an indefinite distance downwards." According to the theory accepted by...

...have, to some certain extent, been filled with minerals or ores; "or, in other words, an aggregation of mineral matter, accompanied by metalliferous ores,...which had its origin in some deep-seated cause, and may be presumed to extend for an indefinite distance downwards. "True veins are almost universally...

...has been filled, more or less perfectly, with mineral substance; or, in other words, an aggregation of mineral matter, accompanied by metalliferous ores,...which had its origin in some deepseated cause, and may be presumed to extend for an indefinite distance downward." Whitney's Metallic Wealth of the United...

...stratification and not to be depended on in depth. Gash-veins may cross the formation at any angle, but are peculiar to the unaltered sedimentary rocks. True...presumed to extend for an indefinite distance downwards." Somewhat different is the classification of R. Pumpelly,t who distinguishes: I. Surf ace- deposits...

...stratilication and not to be depended on in depth. Gash-veins may cross the formation at any angle, but are peculiar to the unaltered sedimentary rocks. True...metalliferous ores, within a crevice or fissure, which hiul its origin in some deep-seated cause, and which may he presumed to extend for an indefinite distance...

...stratification and not to be depended on in depth. Gash-veins may cross the formation at any angle, but are peculiar to the unaltered sedimentary rocks. True...by metalliferous ores, within a crevice or fissure, * Ileport of a Geological Surveg of the Mississippi Jjead Region, Albany, 1868, p. 224, and The Metallic...