METHODS OF REDUCING THE GERM CONTENT 



517 



HOT WATER 

 OUTLET-^ 



WLET 



HOT WATER 

 INLET 



WATEff 



MILK 



OUTLET. 



ra 



k 



m 



^ 



5ii 



£NO VIEW 



Pipe oonnech'ons remet/ed 

 io ahoi^ &oui>/e ¥if6w. 





m 



m 







SIDE VIEW 



Fig. 204.— A double-tube milk heater. (S. H. Ayers in Circular 184, Bureau 

 of Animal Industry, U. S. Dept. of Agriculture.) 



Fig. 20S. — Willmann regenerative pasteurizer. 



