800 



Olio (lotormination with precipitate ignited in a Rose crucible gave 0.0799. 



Two blanlv determinations gave no precipitates. 



^"rom these results it would appear that the estimation of chromium by 

 precipitation as chromium hydroxide and ignition in the ordinary way is 

 not reliable and that the error is independent of the composition of the 

 vessel in which the precipitation is effected. 



