Mr. Hold's complete pasteurizing plant, with the new 

 heater, is shown in Fig. 102, page 99, and Mr. A. Jensen's 

 cream pasteurizing plant is shown in the chapter on Pasteur- 

 izing in Creameries. 



Fig. 39. 



This virtually covers the evolution of the Fjord heater up 

 to 1901. 



SURFACE HEATERS WITH MILK EXPOSED AND COV- 

 ERED. 



In Sweden De Laval constructed a well made if rather 



Fig. 40. 



Fig. 41. 



