xviii MILK AND THE PUBLIC HEALTH 



Fia. PAGE 



27. Lawrence's Eefrigerator . . .288 



28. Cylindrical Refrigerator . 288 



29. Whole Churn ... 292 



30. Section of a satisfactory Churn . 292 



31. Steam Turbine Brush Machine . 295 



32. Sterilised Milk Bottle . . 296 



33. Milk Bottle for ordinary milk delivery 296 



34. Bottle Cap ... .296 



35. " Retainer " type of Pasteuriser 379 



