Aegineta Paulus, The seven books of Paulus Ægineta… (1844)
“ The formation of flatus in the stomach arises from the juices or food being dissolved into vapours by a gentle heat. For cold, as it is not of an attenuating and dissolving nature, does not engender flatulence; whilst a violent heat not only attenuates, but likewise dissipates, and thus prevents the formation of flatulence. But a lesser degree of heat dissolves and changes the food, but not sufficiently, and hence flatus is gendered. Wherefore we must attenuate them by calefacient medicines—boiling in oil the seed of cumin, of parsley, of cow-parsnip, and of carrot. ”
