DIY History | Transcribe | Scholarship at Iowa | Coal Measures and Coal Mining in Iowa, including paleontology and a discussion on the coal formation; also the methods of mining by Russell T. Hartman, 1898 | Coal Measures and Coal Mining in Iowa by Russell T. Hartman, 1898, Page 165

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Coal Measures and Coal Mining in Iowa, including paleontology and a discussion on the coal formation; also the methods of mining by Russell T. Hartman, 1898

Coal Measures and Coal Mining in Iowa by Russell T. Hartman, 1898, Page 165

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[page]164.[/page] Reference,-- Final Rept. U. S. Geol. Sur. of Nebraska, page 234. [underlined]Nautilus missouriensis[/underlined], Swallow Plate XII. figure 4 Swallow, 1858, Trans. St. Louis. Acad. Science, Vol. I. p198. Shell small, expanding rather rapidly to aperture, last volution concealing others; cross section of volutions crescent shaped; septal sutures simple.