BIBLIOGRAPHY 183 



Significance of Sediment. If no efforts were made by 

 producers and dairymen to remove sediment from milk, the 

 determination of the dirt and debris would be an invaluable 

 guide to the care exercised in the production and handling of 

 milk, but in view of the fact that strainers or slime separators 

 are in almost imiversal use, the amount of sediment may bear 

 no relation whatever to the general condition of the milk. It has 

 been shown by many sanitarians that the suspended debris 

 represents only a small proportion of the total dirt and if this 

 soUd debris is removed by filtration or separation the general 

 ph3^sical appearance of the milk might be entirely fallacious. 

 The use of cotton disc filters by sanitary inspectors has accom- 

 plished much in the last few years by demonstrating to vendors 

 in an incontrovertible manner the dirtiness of their product, but 

 no real progress will be affected thereby if the farmer increases 

 the efl&ciency of his strainers instead of preventing the access of 

 dirt. There is a possibility that sanitarians may defeat their 

 own objects by the placing too much reliance on the disc test 

 and failing to correlate it with the bacterial count and other 

 tests. Such '' prima facie " evidence of cleanliness may be 

 nothing but a specious fallacy. 



BIBLIOGRAPHY 



1. Stokes and Wegefarth. Med. News. 1897,71,45-48. J. State Med., 

 5, 439. 



2. Hewlett, Villar, and Revis. J. of Hyg. 1909, 9, 271-278. 



3. Scannel. Amer. Jour. Pub. Health. 1912, 2, 962. 



4. Ernst. Milk Hygiene. Trans, by Mohler and Eighorn. Chicago, 



1914. 



5. Doane and Buckley. Md. Agr. Expt. Sta., Bull. 102, 205-223. 



6. Russell and Hoffmann. J. Inf. Dis., Supple. 1907, 3, 63-75. 



7. Russell and Hoffman. Amer. Jour. Pub. Hyg. 1908, 18, 285-291. 



8. Amer. Jour. Pub. Hyg. 1910. 20, 315-345. 



9. Savage. Jour, of Hyg. 1906, 6, 123-138. 



10. Prescott and Breed. J. Inf. Dis. 1911, 7, 632-640. 



11. Stone and Sprague. Jour. Med. Research. 20, 235. 



12. Breed and Stiger. J. Inf. Dis. 1911, 8, 361-385. 



13. Breed. New York Expt. Sta., Bull. No. 38. 1914. 



