102 



ESTIMATION OF TOTAL SOLIDS AND ASH. 



A diagrammatic figure of the bath will assist comprehension 

 of the details (Fig. 10). 



A very convenient water-bath for milk analysis is that devised 

 by Vieth ; the chief advantage of this lies in the lid, which, 

 instead of merely having holes made in it in which the basins 

 fit ft has a copper ring fastened into each. This enables the 

 basins to.be't?-kipn off without contact between the fingers and 



Fig. 10. Diagrammatic View of Air-bath. 



the hot lid. This bath may be heated by a steam coil or a gas 

 flame, and is conveniently supplied with water by a constant 

 level apparatus. 



If dry steam is available it is very convenient to use steam 

 coils to heat the bath, and to condense the steam after it has 

 passed the coils. The condensed steam can be used as distilled 



