The Tnals of Cream Separators at Doncaster. 
511 
minute, the temperature of separation 81° to 98" Fahr. The 
separation, however, was not efficiently performed in comparison 
with the others, for only 91^ per cent, of the butter-fat in the 
whole-milk was removed, and as much as 0'331 per cent, of fat 
left in the skim-milk. This was the worst result obtained, and 
Fig. 3.— Sectiou of " Leviatlian" Power Separator. 
undue haste to get through the large amount the machine was 
stated to deal with may have had to do with the imperfect 
separation. The loss for such a machine was little. Dis- 
mantling and cleaning occupied thirty-five minutes, and putting 
together four minutes moi*e. It could not be said to be easy to 
