Vol. VII, pp. 1-64 ■ April 13, 1892 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



THE 



GEOGKAPHIO DISTRIBUTION^ 



OF 



LIFE IN NORTH AMERICA 



WITH fSHECI.\I. KEKERENrE TO THE 



MAMMALIA 



BY 



C. HART MERRIAM, M. D. 



WASHINGTON ' 

 Published by the Biological Society of Washington 



