Standards for Certified Milk. 271 



opening into the rooms should be on opposite sides of the building and provided with 

 locks. The windows should be barred and the sash should be at least 5 feet from the 

 ground and constructed for proper ventilation. The walls should be of a material 

 which will allow proper disinfection. The floor should be of painted or washable wood 

 preferably of concrete, and so constructed that the floor may be flushed and properly 

 disinfected. Proper heating, lighting, and ventilating facilities should be provided. 



94. In the event of any illness of a suspicious nature the 

 attending physician shall immediately quarantine the suspect, 

 notify the health authorities and the secretary of the commission, 

 and examine each member of the dairy force, and in every inflam- 

 matory affection of the nose or throat occurring among the 

 employees of the dairy, in addition to carrying out the above- 

 mentioned program, the attending physician shall take a culture 

 and have it examined at once by a competent bacteriologist ap- 

 proved by the commission. Pending such examination, the affected 

 employee or employees shall be quarantined. 



95. It shall be the duty of the secretary, on receiving notice 

 of any suspicious or contagious disease at the dairy, at once to 

 notify the committee having in charge the medical supervision of 

 employees of the dairy farm upon which such disease has de- 

 veloped. On receipt of the notice this committee shall assume 

 charge of the matter, and shall have power to act for the com- 

 mission as its judgment dictates. As soon as possible thereafter, 

 the committee shall notify the commission, through its secretary, 

 that a special meeting may be called for ultimate consideration 

 and action. 



96. When a case of contagious disease is found among the 

 employees of a dairy producing certified milk under the control 

 of a medical milk commission, such employee shall be at once 

 quarantined and as soon as possible removed from the plant, and 

 the premises fumigated. 



When a case of contagion is found on a certified dairy it is advised that a 

 printed notice of the facts shall be sent to every householder using the milk, giving 

 in detail the precautions taken by the dairyman under the direction of the commission, 

 and it is further advised that all milk produced at such dairy shall be heated at 145 F. 

 for 40 minutes, or 155 F. for 30 minutes, or 167 F. for 20 minutes, and immediately 

 cooled to 50 F. These facts should also be part of the notice, and such heating of 

 the milk should be continued during the accepted period of incubation for such con- 

 tagious disease. 



The following method of fumigation is recommended : 



After all windows and doors are closed and the cracks sealed by strips of paper 

 applied with flour paste, and the various articles in the room so hung or placed as to be 

 exposed on all sides, preparations should be made to generate formaldehyde gas by 

 the use of 20 ounces of formaldehyde and 10 ounces of permanganate of potash for 

 every 1,000 cubic feet of space to be disinfected. 



For mixing the formaldehyde and potassium permanganate a large galvanized- 

 iron pail or cylinder holding at least 20 quarts and having a flared top should be used 

 for mixing therein 20 ounces of formaldehyde and 10 ounces of permanganate. A 

 cylinder at least 5 feet high is suggested. The containers should be placed about in 

 the rooms and the necessary quantity of permanganate weighed and placed in them. 

 The formadehyde solution for each pail should then be measured into a widemouthed 

 cup and placed by the pail in which it is to be used. 



Although the reaction takes place quickly, by making preparations as advised all 

 of the pails can be "set off" promptly by one person, since there is nothing to do 

 but pour the formaldehyde solution over the permanganate. The rooms should be 



