SEVENTEENTH ANNUAL YEAR BOOK— PART IX 493 



Dr. Bennett for co-operation, and an endeavor was made at this time 

 to supply cleaned and disinfected cars for all shipments going out 

 of the fat stock division that might be diverted as feeders. 



The government and Illinois state officials and the members of 

 the Chicago Live Stock Exchange lived in hourly dread and ex- 

 pectation of an outbreak of the disease in the stock yards, as they 

 had during the 1908 outbreak in Michigan, but no one knew then 

 or even now that any infection existed in the fat stock division on 

 October 28, when word was received of the outbreak at Blissfield in 

 cattle that had left the stoeker and feeder division of the yards on 

 October 19, 1914. No foot and mouth disease ever developed in any 

 live stock that passed through the Chicago yards prior to October 

 19, 1914. 



While a thorough investigation failed to locate infection more 

 definitely in the Chicago stock yards than was indicated by the 

 Blissfield shipment, it was decided to take precautionary measures 

 and as a result, the Secretary of Agriculture issued an order ef- 

 fective October 31, quarantining these yards. 



The National Dairy Show was held at Chicago from October 22 

 to 31, and at the time the quarantine order of October 31 went into 

 effect, the National Dairy Show cattle were in the barns of the 

 Union Stock Yards Company, having been held for observation by 

 the state veterinarian of Illinois on October 29, at the request of 

 the bureau, and in addition a large number of stockers and feeders 

 as well as fat cattle were in the pens of the Union Stock Yards Com- 

 pany. Shipments from the stoeker and feeder division had been dis- 

 continued since the evening of October 28. The day following the 

 quarantine of the Chicago yards, one of the dairy show cows de- 

 veloped unmistakable lesions of foot and mouth disease, and two 

 days later, November 3, several of the feeders which had been held 

 under lock and key in the stoeker and feeder division of the yards 

 since October 28, likewise developed the disease. The discovery of 

 these cases in the dairy show barn and the stoeker and feeder di- 

 vision of the Chicago stock yards was the first knowledge anyone 

 had that foot and mouth disease existed in Chicago. 



The secretary's quarantine order stopped the movement of all 

 animals to and from the Chicago stock yards, except for immediate 

 slaughter, and as soon as the disease was discovered there, all of 

 the pens were cleared of animals and preparations made for a gen- 

 eral cleaning and disinfection. The 840 cattle that had been held 

 in the stoeker and feeder division under lock and key since the 



