for keeping all together were absolutely necessary for our common safety.

In two days more we passed the great China wall, made for a fortification against the Tartars: and a very great work it is, going over hills and mountains in an endless track, where the rocks are impassable, and the precipices such as no enemy could possibly enter, or indeed climb up, or where, if they did, no wall could hinder them. They tell us its length is near a thousand English miles, but that the country is five hundred in a straight measured line, which the wall bounds without measuring the windings and turnings it takes; it is about four fathoms high, and as many thick in some places.

I stood still an hour or thereabouts without trespassing on our orders (for so long the caravan was in passing the