SEPARATION OF CREAM. 



133 



Machine." Another German machine, called "The Page," was 

 also manufactured in the horizontal bowl style. 



From the above it will be noticed that four separate steps 

 are recognizable in the evolution and improvement of separators : 



1. Revolving Bucket Centrifuge; 



2. Intermittent Hollow Bowl; 



3. Continuous Hollow Bowl; 



4. Continuous Separator with contrivances within the 



Bowl. 



FIG. 72. The Simplex separator. 



The science and practice of separation of milk and cream 

 have seemingly reached a high state of efficiency. It seems 

 almost improbable, considering the many new improved sepa- 

 rators on the market that any other great improvement could 

 be made which would add a separate stage to the improve- 

 ment of our best centrifugal milk separators of to-day. 



Classification of Separators. Owing to the many different 

 standard types of separators now on the market, it is impossible 

 to describe each one in detail. For this reason the classifi- 



