S U L P H U R A X D PIIOSPHOKI'S IN PL.\NT S C B S T h N C E S .
1093
silver selenite ammonia with hydrochloric acid, wash the paper free from chlorine and reduce the selenious acid in the filtrate by ineans of sodium bisulphite. ( b ) In case zinc nitrate is used : Filtering after the decomposition with hydrochloric acid may be omitted. INDIANA
[CONTRIRUTIOX FROM
THE
LABORATORS O F T H E ~'ENSSYI.VANI.4 STATE EXPERIMENT STATiON. ]
COLLEGE
T H E DETERMINATION OF SULPHUR A N D PHOSPHORUS IN P L A N T SUBSTANCES. BY
c. P. 13EISTI.E.
i
