Issued May 29, 1909. 



U. S. DEPARTMENT OF AGRICULTURE 

 BIOLOGICAL SURVEY— BULLETIN No. 33 



C. HART MERRIAM, Chief 



THE BROWN RAT W THE 

 UNITED STATES 



BY 



DAVID E. LANTZ 



ASSISTANT, BIOLOGICAL SURVEY 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1909 



