202 APPENDICES. 



condemned and destroyed by the milk and food inspectors or other duly 

 authorized agents or employes of the Department of Health of the City 

 of Chicago. 



SECTION 4. This ordinance shall be in full force and effect from and 

 after January 1, 1909. 



RULES RKGUI.ATING THE TUBERCULIN TESTING OF Cows. 



Rule 1. Who May Make the Test.] Tuberculin tests made on ani- 

 mals supplying the City of Chicago with milk or milk products may be 

 made by licensed graduate veterinarians, federal or state veterinarians, 

 federal, state or city dairy and milk inspectors and by persons regularly 

 employed by the Chicago Department of Health for that purpose. 



Rule 2. The Test to be Employed.] The regular injection method 

 of tuberculin testing shall be employed. The temperature shall be 

 taken at least four times on the da}- preceding the inoculation, and at 

 least six times on the day following the inoculation, at not less than two 

 hour intervals. A rise of two degrees over the average temperature on 

 the day preceding the inoculation shall be considered a positive test. 

 If a rise of from one and a half to two degrees is obtained, the results 

 shall be considered doubtful, and the animal subjected to a later retest. 

 Animals that have been added to the herds within the last six weeks 

 shall be tested by the ordinary injection test supplemented by Cal- 

 mette's Ophthalmic Test, and a positive result with either one or the 

 other shall condemn the animal. The Department of Health shall have 

 the power to require the retesting of all animals submitted for milk sup- 

 ply by the Calmette Ophthalmic method or any other method to be 

 decided on in the future. 



Rule 3. The Numbering and Tagging of Animals.] All tested ani- 

 mals shall bear an indestructible tag indicating the series, and also the 

 number assigned to the animal. Tags placed by federal, state and 

 municipal inspectors will designate by abbreviations or otherwise the 

 series represented. Veterinarians supplying the numbered tags must 

 have their initials or some other distinctive mark appear on the tag with 

 the number to indicate the series. 



Rule 4. Statement to be Submitted.] A statement must be filed with 

 the Division of Milk Inspection for every tuberculin tested animal sup- 

 plying the City of Chicago with milk or milk products. This statement 

 must indicate the number and series given to the animal, which number 

 and series must correspond with the tag or mark worn by the animal. 

 This statement must also state the age and color of the animal, and any 

 other distinctive marks shown by the animal. In addition the statement 

 must show the temperature, record of the animal on the days preceding 

 and following the test, the date and the exact time of taking these 



