“…The procedure was briefly as follows: Owing to the difficulty with which cereals are ashed the samples mere limited to one gram of substance. The ashing was carried out as recommended by Sullivan and Near (1927) j the materials were weighed out into platinum dishes, ashed in an electric muffle first at 400°C.(752"F.) and then allowed to remain in the muffle at 62OoC.(1148"F.)…”