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UNITED STATES AND MEXICAN 



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UNDER THE ORDER OF 



LIEUT. COL. W. H. EMORY, 



MAJOE FIRST CAVATLEY, AND UNITED STATES COMMISSIONER 



MAMMALS 



OF THE 



OUND ARY, 



BT 



SPENCER F. BAIRD, 



ASSISTANT SECEETAHT OF THE SMITHSONXAN INSTITUTIOZT, 



WITH NOTES BY THE NATURALISTS OP THE SURVEY. 



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