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A Report of Work Done in the Washington Laboratory During the Fiscal Year 1883-84
A report about the rocks, clays, and other geologic sediments analyzed by the Washington laboratory during 1883 to 1884.
Date:
1884
Creator:
Clarke, F. W. & Chatard, T. M.
System:
The UNT Digital Library
On the Cambrian Faunas of North America Preliminary Studies
A report about the fauna of the Saint John Formation contained in the Hartt Collection.
Date:
1884
Creator:
Walcott, Charles Doolittle
System:
The UNT Digital Library
On Secondary Enlargements of Mineral Fragments in Certain Rocks
A report about quartz fragments and genesis of qartzites. Sandstones are described that have grains which are bounded externally by crystalline faces. The quartz coatings of these grains are in perfect "optical and crystalline continuity" with the interior fragments.
Date:
1884
Creator:
Irving, R. D. & Van Hise, C. R.
System:
The UNT Digital Library