. Annual report of the Board of Regents of the Smithsonian Institution . Fig. Pipes. A STUDY OF rREHISTORIC ANTHROPOLOGY. 663 They are chiefly carved from stone, but not unfrequently were moldedin clay. Messrs. Squier and Davis, in their explorations of mounds in Ohio,discovered many curious and Interesting types. They were supposedat one time to have been made of hard stone, a kind of porphyry, butlater examinations and scientific analyses have shown them to be ofsofter materials, composed of slaty and calcareous minerals. Kos. 177 to 184 represent types of those found by Squier and


. Annual report of the Board of Regents of the Smithsonian Institution . Fig. Pipes. A STUDY OF rREHISTORIC ANTHROPOLOGY. 663 They are chiefly carved from stone, but not unfrequently were moldedin clay. Messrs. Squier and Davis, in their explorations of mounds in Ohio,discovered many curious and Interesting types. They were supposedat one time to have been made of hard stone, a kind of porphyry, butlater examinations and scientific analyses have shown them to be ofsofter materials, composed of slaty and calcareous minerals. Kos. 177 to 184 represent types of those found by Squier and Davis.


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