CHAPTER II. 



II E P O R T 



. UPON 



THE COLLECTIONS OF MAMMALS 



MADE IN PORTIONS OF 



NEVADA, UTAH, CALIFORNIA, COLORADO, NEW MEXICO, AND ARIZONA, 



THE YEARS 1871, 1872, 1873, AND 1874. 



BY 



DR. ELLIOTT COUES AND DR. H. 0. YARROW. 



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