“…In Flossner's preliminary paper, published a short time before his death, no experimental data are given of the composition of the synthetic fat or of the quantities consumed. He did not consider the fact that the consumption of synthetic fats is followed by a remarkable increase of the urinary output of dicarboxylic acids, as stated by Karl Thomas and his co-workers (Thomas & Weitzel, 1946, 1949Weitzel, Fretzdofi, Wojahn, Savelsberg & Thomas, 1949). The occurrence of this aciduria shows that the metabolism is somehow altered by the use of synthetic fats.…”