xiv LIST OF ILLUSTRATIONS 



FIGURE PAGE 



26. A simplex power separator 66 



27. The original United States separator .... 66 



28. The modern United States separator . . . .67 



29. DeLaval power separator (large hollow bowl type) 68 



30. Old and new types of DeLaval hand separator . . 69 



31. Belt- and turbine-driven type of DeLaval power separa- 



tors .... . . . . .69 



32. The Titan-Alexandra, the largest separator made . 70 



33. A comparison of the amounts of cream from one can of 



whole milk separated at different temperatures . 71 



34. A diagram representing percentage of fat in cream as 



influenced by the temperature of the whole milk 73 



35. A diagram representing percentage of fat in skimmed- 



milk as influenced by the temperature of the 

 whole milk . 74 



36. A diagram representing percentage of fat in cream as 



influenced by the number of revolutions of the 

 separator crank a minute . . . . .75 



37. A diagram representing percentage of fat in skimmed- 



milk as influenced by the number of revolutions of 



the separator crank a minute . . .75 



38. A diagram representing the percentage of fat in cream 



as influenced by the percentage of fat in whole 

 milk . . * . . . .... 76 



39. The barn is not a desirable location for a separator 80 



40. A convenient and inexpensive building in which to 



make farm butter . . . . . .81 



41. A satisfactory building in which milk may be handled 



in a sanitary manner and a good location for a 



separator and churn . . . . . 82 



42. Interior view of the building shown in Fig. 41 . . 83 



43. A few of the many types of hand churns . . . . 124 



44. Power churns // . . . . . .125 



45. Creamery of the Fox River Butter Company . . 127 



46. The churning process is not complete, for the granules 



are too small , . , . . -.... '* . . 138 



47. The churning process is complete. The granules are 



about the size of a kernel of corn . . . 139 



48. A mottled butter 150 



