222 MANUAL OF MILK PRODUCTS 



tion to carrying out the above-mentioned program, the attending 

 physician shall take a culture and have it examined at once by a 

 competent bacteriologist approved by the commission. Pending 

 such examination, the affected employee or employees shall be quar- 

 antined. 



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 developed. On re- 

 ceipt of the notice this committee shall assume charge of the matter, 

 and shall have power to act for the commission as its judgment dic- 

 tates. 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 dairy- 

 man 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 contagious 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 

 1000 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 formalde- 

 hyde 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 formaldehyde solution for each pail should then be measured into 

 a wide-mouthed 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 



