"We have been two months and a half getting up the river, which gradually rises to a higher level above the sea. At this season, the water being low, the navigation is really less dangerous, as the rocks can be more easily seen than when the water is at its height." - A Journey in China, Chap. 1 Воспроизведено в оригинальной авторской орфографии издания 1884 года (издательство "Chapman & Hall"). Это и многое другое вы найдете в книге Russian Travellers in Mongolia and China, Vol. 2 (Пясецкий, Павел Яковлевич)