188 Milk and Its Products 
same diameter, and at the same time the efficiency of 
separation is increased. 
In the latest developments in separator construction 
various other devices intended to secure the same end 
Fig. 28. ‘Tubular separator 
have been more or less successfully used. Among the 
more recent of these the simplex (Fig. 25) and the 
tubular (Fig. 28) should be mentioned. The latter has 
been particularly successful in securing efficiency by 
making the bowl very long and of very small diameter 
and running it at a comparatively high speed. 
