. Annual report. 1st-12th, 1867-1878. REPORT OF W. J. HOFFMAN, M. D. LETTER OF TRANSMITTAL. United States Geological and GeographicalSurvey of the Territories, Washington, D. (7., December 31, : I have the honor to transmit herewith my report of observationsupon a cliff-dwellers cranium, found in Chaco Canon, New Mexico, byMr. W. H. Jackson, at a depth of 14 feet beneath the surface, lying upon astratum of broken pottery. The deposit in this canon consists of allu-vial drift, in which are several arroyos from 6 to 16 feet deep, by theerosion of which the lower stratum was brought to vi


. Annual report. 1st-12th, 1867-1878. REPORT OF W. J. HOFFMAN, M. D. LETTER OF TRANSMITTAL. United States Geological and GeographicalSurvey of the Territories, Washington, D. (7., December 31, : I have the honor to transmit herewith my report of observationsupon a cliff-dwellers cranium, found in Chaco Canon, New Mexico, byMr. W. H. Jackson, at a depth of 14 feet beneath the surface, lying upon astratum of broken pottery. The deposit in this canon consists of allu-vial drift, in which are several arroyos from 6 to 16 feet deep, by theerosion of which the lower stratum was brought to respectfully, your obedient servant, ,W. J. HOFFMAN, M. F. Y. Hatden, United States Geologist in charge. 451 REPORT ON THE CHACO CRANIUM. By W. J. Hoffman, M. D. The discovery of a skull in Ohaco Cafion (Northwestern New Mexico),belonging to the race which we recognize as the cliff-dwellers or ancientPueblos, is one of considerable value and interest. Large ruins in ex-cellent state of preservation occur in this valley,


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