ILLUSTRATIONS 



FIGURE PAGE 



Milk in Politics Frontispiece 



1. Composition of Cow's Milk, Showing Variations 6 



2. Commercial Appeal on Economic Grounds 8 



3. The Long vs. the Short Haul 17 



4. Systems of Milk Supply 37 



5-10. Typical "Milksheds" of Large Cities: 



5. New York 39 



6. Philadelphia 41 



7. Boston 43 



8. Chicago 44 



9. Washington 45 



10. Milwaukee 47 



11. The Small-mouth Milking Pail 79 



12. Time and Temperature for Milk Pasteurization 104 



13. Commercial Appeal on Sanitary Grounds 106 



14. Commercial Appeal on Sanitary Grounds 107 



15-20. Relative Retail Prices, 1890-1915: 



15. Milk and Fresh Eggs 128 



16. Milk and Potatoes 129 



17. Milk and Round Steak 130 



18. Milk and Bacon 131 



19. Milk and Wheat Flour 132 



20. Milk and Five Staple Foods 133 



21. Retail Price of Milk Compared with Costs of Production 134 



22. Profit from Different Cows 135 



PLATE 



1. Interior of a High-class (Certified) Dairy Stable, .opposite page 68 



2. Ordinary Dairy Stables in Which Clean Milk Is 



Produced " " 80 



3. Ordinary Dairies and Extraordinary Dairymen. .. " " 83 



4. (a) Bacteria Plates, (6) Dirt Tests " "93 



5. (a) Home Pasteurizer, (6) Results of Clarification " " 109 



6-7. Primitive Conditions in the Milk Industry " "110 



8-14. Advanced Conditions in the Milk Industry. . . " " 110 



15. Laboratory of a Large Modern Milk Plant " " 145 



16. A Small Municipal Milk Laboratory " "166 



xi 



