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j.\MiN Kendall Emeuson. (1898.) 

 „ .30. Fossil Medusic. By Charles Doolittle Walcott. (1898.) 

 „ 31. Geology of the Aspen Mining District, Colorado. With 

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 „ 32. Part 2. Geology of the Yellowstone National Park. Part 2. 

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 „ 34. The Glacial Gravels of Maine and their Associated Deposits. 



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 „ 35. The Later Extinct Floras of North America. By John 

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 ,, 36. The Crystal Falls Iron-Bearing District of Michigan. By 

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 „ 37. Fossil Flora of the Lower Coal Measures of Missouri. By 



David White. (1899.) 

 „ 38. The lUinuis Glacial Lobe. By Frank Leverett. (1899.) 

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Svo. Washington, 1887. B. Daydon Jackson. 



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