[LXrUSTRATIONS. 



XIII 



Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 



Fig. 12. 



Fig. 13. 

 Fig. 14. 



Fig. 15. 

 Fig. 16. 



Fig. 17. 



Sterili/.er containing racks for holding bottles 14 

 Ropy cream lifted with a fork 31 

 liacillns lactis VtSfQSUS 31 

 Germicidal action of freshly drawn milk 35 

 L,aundrv in which milk cans were washed 50 

 Conditions surrounding- a case of typhoid fever 51 

 Blank for recording temperatures 78 

 Ear-tag for marking cattle SO 

 Card employed by the writer for the identification of cows 81 

 Moak's card for identifying cows 83 

 Diagram showing 'improvement in dairy scores in Rich- 

 mond, Va. 104 

 Section of udder showing epithelial cells .. 134 

 vSection of udder showing epithelial cells and polynuclear 



leucocytes - 135 

 Chart showing relation of municipal milk stations to infant 



mortality 171 



Appendix A. 

 Appendix B. 

 Appendix C. 

 Appendix D. 

 Appendix E. 



APPENDICEvS. 



Dairy ordinance of Berkeley, Cal. 



Chicago tuberculin test ordinance 



Duluth milk ordinance 



Blank for reporting existence of infectious diseases.. 



Poster for dairy barns 



195 

 200 

 206 

 211 

 212 



Index 



214 



