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267 Hilgard (E. W.). [Correlation of clastic rocks.] 
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271 Geology of parts of Texas, Indian Territory, and Arkansas 
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272 Hillebrand (W. F.). [Beaver Creek meteorite.l 
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273 Hind (Wheelton). [On the occurrence of the genns Naiadites in 
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274 Hinde (George Jennings). Note on the radiolarian chert from 
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Describes the occurrence of Radiolaria in cherts and the details of 
those forms which can bo partially identified. 
