228 QUANTITATIVE ANALYSIS. 



ness, and fused. 1 Then proceed as directed under " Faeces/' 

 page 214, using 30 to 35 cc. of nitric acid. Instead of this 

 method we may also use sulphuric acid and ammonium nitrate 

 for the oxidation according to the method of A. Neumann 

 (see page 215). 



9. Determination of the Total Sulphur. Ten cubic cen- 

 timeters of milk are evaporated to dryness with 30 g. of the 

 oxidizing mixture and fused. Then proceed as directed 

 under ' ' Urine/' page 207. 



1 By working very carefully the oxidizing mixture may be heated to 

 fusion directly after adding the milk. 



