At Hwai-lai-hien, a good-sized walled town, we halted for the night. Outside the city is a very large stone bridge, evidently of the same period as those at Sha-ho. Five gothic-shaped arches are still standing, and another is detached at a distance of some 200 feet, the intermediate part of the bridge having no doubt been destroyed. There is no water now in the river, but the bed is still well marked, and the old embankments remain, about 500 or 600 yards apart. The old bed of the river is in a high state of cultivation now. I find the following notice of this bridge and this river in Bell's Travels. He does not, indeed, give the name of the town, but, tracing up his march from stage to stage, between the Great Wall and Peking, it is evident that Hwai-lai is the station referred to. He says: "About noon, next day, we came to a large, populous, and well-built city, with broad streets, as straight as a line. Near this place runs a fine river, which appears navigable, having across it a noble stone bridge, of several arches, and paved with large square stones." Bell also makes frequent allusion to an earthquake, which did great damage to this part of the country in July, 1719. Many towns and villages were half destroyed, and some were wholly laid in ruins, and "vast numbers of people" were engulfed. "I must confess," says Bell, "it was a dismal scene to see everywhere such heaps of rubbish." The district being subject to earthquakes, makes it probable that the fine bridge has been destroyed by that agency. But what has become of the fine navigable river that existed in 1720, and has now disappeared? Has it also been upset by an earthquake? The river was probably the Kwei-ho, which now runs in another direction, but some of the gentlemen of Peking or Tientsin, who have explored the country, will no doubt elucidate this interesting question. On the 19th we made an early start, and went at a very steady pace towards the northern chain of mountains. On approaching them we turned slightly to the left, and skirted the base of the hills. We met a good deal of traffic on the road here, all goods being carried on the backs of mules and donkeys. Coal formed a conspicuous object, on its way to Peking, where it is used to a considerable extent. Immense flocks of sheep are continually passing in the direction of Peking, and we also met a good many herds of horses bound the same way. Our mid-day halt was at Shacheng, a walled town. All over this country are the ruins of old forts; and a line of square towers, with a good many blanks, runs nearly in the direction of the road. If these forts could speak they could tell a tale of many a hard-fought battle before and after the Mongol conquest of China.