18 THE CONTAMINATION OF MILK. 



Iii 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. Bui. No. 204, Agr. Exp. 

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



2. BACKHAUS und APPEI,. Ueber aseptische Milchgewinnung. II, 

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



3. BACKHAUS. Einfluss des Putters und der Individualitat der Milch- 

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

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



4. BACKHAUS und APPEIV. Ueber aseptische Milchgewinnung. Ber, 

 Landw. Inst. Univ. Konigsb., 1903. 



5. EARTHED. Recherches sur les microorganismes de 1'air des etables, 

 du lait au moment de la traite et de la mamelle. Rev. Gen. Lait, l re 

 Anne, 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 

 German Agricultural Council. 



7. BELCHER. 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 and 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. Fifteenth Ann. Rept. Storrs Agr. Exp. Sta., Storrs, 

 Conn., 1903, p. 38. 



