《农桑辑要·孳畜·牛水牛附》
治牛肚胀及嗽方：将榆树的白韧皮，放在水中煮熟，汁甚滑，用三五升灌入牛腹，即愈。
牛肚胀及嗽方取榆白皮、水煮令熟，甚滑，以三五升灌之，即差。
To treat flatulence and coughing: boil the white bark of the elm tree in water until cooked, the juice is very smooth, pour three or five liters into the cow's stomach, and it will be cured.