WHY CREAM TESTS VARY 107 



person could throw a cork the same distance as he 

 could throw a stone, neither can centrifugal force 

 throw the cream the same distance as it can throw 

 the skim milk. Having endeavoured to explain 

 the broad principles upon which all cream separators 

 work, it will be as well to look into some of the 

 salient points which either produce clean or in- 

 different skimming. Many of the troubles which 

 beset the user of a cream separator and often 

 perplex the expert user can generally be overcome 

 by using a little patience and common sense. 



Given a first-class machine of reputable make, 

 and avoiding the cheap and nasty variety, then 

 indifferent or imperfect skimming can usually be 

 ascribed to one of the following causes, or a com- 

 bination of several : 



1. Too slow speed of handle. 



2. Too cold milk. 



3. Inflow too fast or too slow. 



4. Irregular turning of handle. 



5. Milk not fresh from the cow. 



6. Bowl out of balance. 



7. Machine not fixed firmly, and not level. 



8. Bad and insufficient lubricating oil. 



9. Bowl left unwashed from last skimming. 



Any good make of separator will skim cleanly if 

 the above points are all attended to, and the user 

 handles the machine properly. It should also be 



