547
FERROCYANIDES O F ZINC AND MANGANESE.
I n using ferrocyanide a s a reagent for volumetric analysis, it is of the utmost importance to keep all of the conditions absolutely uniform. Provided this is done the results are good, but if there is any variation they are liable to be entirely incorrect. T h e following table gives the analytical results in detail : TABLE. Hydrochloric acid. TemperExcess. cc. ature.
Fe(CN), Fe)CN), Zn Zn
o
Cold
o
