《徐霞客游记·江右游日记十四》
又走二里，又见到一条溪水也是向东流去，它叫芝水，有座石桥横跨在溪上。
地名。又二里，复得一溪亦东向去，是名芝水，有石梁跨其上。
After walking another two li, you will see another stream that also goes east. It is called Zhishi, and there is a stone bridge across the stream.