18 THE CONTAMINATION OF MILK. 



In fact, passing milk through a centrifugal machine increases 

 the apparent number of bacteria by separating the clumps (55, 

 56). 



REFERENCES. 



1. Anderson. The cow and her stable. Bid. No. 204, Agr. Exp. 

 Sta. Univ. of CaL, Berkeley, Cal., 1908. 



2. Backhaus und AppeIv. Ueber aseptische Milchgewinnung. II, 

 Ber. Landw. Inst. Univ. Konigsb, V, 1898-1899, S. 73. 



3. Backhaus. Einfluss des Putters und der Individualitatder Milch- 

 kuh auf Geschmack und Bekommlichkeit der Milch. Ber. Landw. Insi. 

 Univ. Konigsb., V, 1898-1899, S. 110. 



4. Backhaus und Appei^. Ueber aseptische Milchgewinnung. Ber. 

 Landw. Inst. Univ. Konigsb., 1903. 



5. Barthei-,. Recherches sur les microorganisnies de I'air des etables, 

 du lait au moment de la traite et de la mamelle. Rev. Gen. Lait, 1''^ 

 Ann^e, 1902, No. 23, p. 529. 



6. Behring. Suppression of tuberculosis in cattle and the hygienic 

 production of milk. Paper read at the XXXIV Plenary Meeting of the 

 Gertnan Agricultural Council. 



7. Bei,cher. Clean milk. New York : The Hardy Publishing Co., 

 1903. 



8. Bergey. Sanitary supervision of the collection and marketing of 

 milk. Univ. of Penn. Med. Bui., July-August, 1904. 



9. Burr. The source of acid organisms of milk ^nd cream. Centbl. 

 Bakt., etc., 2 Abt., Bd. VIII, 1902, No. 8, S. 236. 



10. Conn. Bacteria in freshly drawn milk. Fifteenth Ann. Rept. 

 Storrs Agr. Exp. Sta., Storrs, Conn., 1903, p. 92. 



11. Conn, Esten and Stocking. Classification of dairy bacteria. 

 Eighteenth Ann. Rept. Storrs Agr. Exp. Sta., Storrs, Conn., 1906, 

 p. 91. 



12. Conn and Stocking. Comparison of bacteria in strained and 

 unstrained samples of milk. Fifteenth Ann. Rept. Storrs Agr. Exp. 

 Sta., Storrs, Conn., 1903, p. 33. 



13. Conn and Stocking. Aseptic milk. Fifteenth Ann. Rept. Storrs 

 Agr. Exp. Sta., Storrs, Conn., 1903, p. 52. 



14. Conn and Stocking. Strained and unstrained milk preserved 

 at 70° and 50° Fifteejith Ann. Rept. Storrs Agr. Exp. Sta., Storrs,- 

 Conn., 1903, p. 38. 



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