THIRTEENTH ANNUAL YEAR BOOK— PART XI 563 



detail Dr. Miller to act in co-operation with your office in securing blood 

 serum from all such animals for the purpose of subjecting the same to 

 the complement fixation test. 



I am enclosing herewith a tabulated outline indicating the apparent 

 origin and spread of the outbreak in Iowa. 



Very respectfully, 

 (Signed) A. D. MELVIN, 



Chief of Bureau. 



